You are free to do the work to support Qt4.6/7 for OS2008 in the Community SSU project or in diablo extras.
This MeeGo hardware adaptation work is to be able to support a modern stack on top of the N8x0 and keep it maintained. MeeGo isn't just Qt. It is a lot of middleware and newer kernels, new libc6 etc. As well as applications built towards this mix.
Hint: our kernel and libc6 on Diablo would cause most apps not to run in their binary ARMv5 form. And those are not easily upgrade-able.
We could be doing backports from now on to the end of time for no good benefit to patchwork on top of a dead-end OS. Not going to do that, personally.
Now, can we get back on topic? This is an effort to provide a hardware adaptation for N8x0 for MeeGo, nothing more, nothing less.
Right, please go take this issue up in my review thread instead. This is a place for development.