Oh I've read somewhere Apple provided devs 4000 different API codes for features in their app to match iOS 8 features. I wonder if it could help something with WD8 features?
My suggestion: do your best to have as much feature as possible to match iOS 8
Ok just kidding, here's some of my idea for improvement:
1/ I saw that there used to be a newspaper app on WD 6. Why don't you make it again, but instead of reading newspapaper, try WD news

ex: a place where devs can post news instead of facebook

(probably difficult and requires lots of effort).
2/ Improvement on the Reminder app. I was confused when using it. Really tricky, same theme as ios's app but not as easy to use.
3/ Make some icon (yeah just icon, no need to be work) of new apps on iOS 8 just to look like real (health, passport, etc.).
4/ if possible, speed improvement to make WD tweaks work more efficiently and less choppy. (i know, just simply disable as much feature as possible for more speed, but I said 'if'

)
5/ Cycorder is an open source, so why don't you make a theme to look like real? WD 7 advertised the ios 7 theme of Cycorder on main page but actually there was no different of WD 6.
6/ Focus more on themes to balance between everything since lots of people don't know and keep asking why those letters are so hard to read, why my button is red, blue, green,... And, Yeah, including a small handmake tweak to make the power off theme like ios 7.1
7/ Make animation to slide and switch between camera modes such as time lapse, video, square,... But no need to make it work, do exactly what you did to the do not disturb button in control center: this function is currently not available...
8/ So the do not disturb feature was 'currently not available'. So, please make it work
9/ (Out of topic) The quick access to camera on lockscreen ought to go back to the lockscreen again rather than go straight into homescreen when I press the home button. What's more, if passcode is turned on, still needs to enter password prior to use the camera. Not useful at all, still take time.
-> In conclusion, I think WD team should focus more on theming than making new features, since old generation devices lacks of speed and lack of resource on iOS 3. I wanted a theme to match exactly like ios 8, even actually they don't work
