for along time ive been monitoring AppGameKit forum sections and i find it really hard for some of you to create games or apps because of Devices Limitations..
now you need to remmber one thing.
as the days/weeks/months fly by as we keep developing ... newer more powerful devices will come along... for example now we have Windows 8 Store.. which we all can benefit from(just for say...) more stores will come also...
please do not be afriad to build something awesome with alot of features and alot of CPU/GPU calculations.. they might work slow now.. but who knows when Iphone 7 or 8 will come along or the Razer tabler (Project Fiona) or many other to come... who knows how powerful and fast they will be?
maybe start thinking of :
if you have an app , a good app that consumes CPU vs GPU alot
maybe for iPhone 5 it will work flawlessly
and for iPhone 4s it wont , so why dont you take some features off on the Iphone4s version with a simple IF IPHONE4S true... dont do , this and this .. if IPHONE4 true dont do this this and this..
stop thinking of limitations.. and build what you dream of.
if you start a project now .. and it will be dont in for say 2 months from now.. maybe even more if its better then you first thought of ... until the release there will be a couple more devices you could try it on.. if still that isnt enough.. wait with it .. learn current limitations build something else, and then when the higher end device will come..release the beast.
not to mention AppGameKit will be more powerful withing these time periods.