Hello, I'm new here (but not to Whited00r) and I have a few suggestions here and there for you, and I have read the posting rules at the start of the thread and have tried my best to be as constructive and helpful as is humanly possible with my vocabulary, so here goes:
Welcome to the forums then!
I'd like to request that folders be changed to look more like the quote-on-quote "Real" iOS 7/8/9 folders look like instead of the current iOS 4/5/6 look they have in Whited00r 7.1, the same goes for the Notes application. Maybe add some kind of Notifications center and / or a Spotlight search like in iOS 7 if possible, where you swipe down from the center of the screen to bring down the search bar?
That would require redoing the folders tweak, which while it is possible, probably won't happen for a while I'm afraid.
The notification center is quite easy to do for a basic one, and spotlight search is easy too. That's on the big to-do list we have

The Siri clone (Sara) doesn't work at all on the iPhone 2G and wouldn't even launch on the iPhone 3G. Didn't try on the iPod Touch 1G/2G because neither have a microphone, so would you mind packaging something slightly better or somehow getting Voice Control from the iPhone 3GS / iPhone 4?
Yeah, the server it used went down ages ago so it no longer works. Voice control can't be ported because it requires a higher firmware than 3.1.3. (unless the iPhone 3GS had it on 3.1.3)
The camera on the iPhone 2G is completely screwed up for both of my devices, the photos always turn out green and black (sometimes a bit of yellow but that's besides the point) and super grainy. Sometimes bookmarks won't go into folders, and sometimes all the icons won't fall all the way onto the home screen or leave a trail of sorts that goes between both pages of applications that I have.
I'm not sure about the camera, have you tried it in safe mode to see if it is a tweak causing the issue?
That's a known folders issue and won't be fixed until we remake the folders tweak. (we don't have the source to it because it was done ages ago and never given to us)
There are a few debilitating and some just annoying graphical issues, such as how in the Contact application the borders for the photos don't work, as well as the fonts in some of the applications are just barely visible by their outline (such as song title in Music), making these apps difficult and in some cases impossible (or at least nearly so) to use properly or without too much trouble.
Graphical issues will be addressed moreso after we port what we can from Grayd00r's UI tweak, because that handles things better

The charging lock screen is also a bit screwed up, as well as the "slide to power off" slider when shutting the device down.
This also will be fixed after we port Grayd00r's lock screen plugin system. (which also allows for even cooler stuff)
The home screen photo doesn't show up in the App switcher for the home page, maybe you could add something that takes a temporary screenshot for this when you exit the application to enter the menu?
Did you happen to disable the advanced options for "Homescreen snapshot" and "App snapshots"? (or something like that, it's been a while since I've used whited00r). Those are what make the snapshots, and it does include the homepage, or should when it works.
Also could you disable round switches by default? It does seem to make devices quite slow, especially first generation devices (iPhone 2G and iPod Touch 1G).
I think we should too, because while it makes a good first presentation visually, actually using it is not so nice. (some people like it though, which is why we have it)
If possible, since the YouTube app doesn't work anymore, could you either remove it or get it working again, even if you just hide the icon and add a Safari link instead, that would be perfect.
Perhaps just hide it is better, in case for some reason people want to use it.
As for fixing it, I don't know if we can (same with most closed API things)
The control center is awesome, but it has in the past crashed some applications and even once sent an iPod Touch 2G into safe mode. Email me if you want more or full details, but I'll save that story for later.
It depends on the usage of it, I'd need details on how to reproduce the bug.
Is it possible to let people choose what base apps they want to remove with some sort of menu or something? I'd like to know whether or not it's possible to change / hide the base iOS applications from view.
It is possible, but it's not implemented. It's easy enough to hide them via file system editing.
Finally, for my only (possibly difficult / impossible) true application request: Would it be possible to change the default Messages app to something else / get the old Skype versions working properly again? Maybe some sort of fix or replacement? I'd also like to see something like iFunBox incorporated be default if that's not too much to ask, and it seems pretty logical that you would add it at some point to me.
Sadly we can't fix old apps that no longer work due to API changes server side, as that is closed source and we also don't have the time or resources to create/maintain a patch that may work, if it's even possible.
Even though I did thoroughly read above, I'm still here to help if needed, I've got every iPhone generation up the the 4S, and the 2G in duplicates, as well as the iPod Touch 1G and two iPod Touch 2Gs. contact me if you need any help with anything hardware-related, I've got time and devices to waste if needed.
We don't have any betas at the moment, as we are working on
Grayd00r for now

Sorry for the clearly (as I realize now) long post, but I do hope it wasn't too terribly full of errors and will be of some help in the construction of the new version of the I must say excellent Whited00r.
If you decide to take any of my ideas or have anything to say about my post or it's contents, please do tell me so that next time I may be more helpful to others (possibly including anyone that ends up reading this post) in the future.
Regards, FAMICOMASTER of AiO Softworks.
This was a very good post, thank you!