To be honest, I'm not very interested about meego. As you said, I don't know what will be New in this OS wich does not exist in Maemo. Nokia should have continue to support Maemo and bring us the great updates the community is working On (even If I did not install CSSU yet - Waiting for a patched Firmware version maybe)
And one "big" problem will be to recompile all the existing apps to work on meego. Seriously, If Maemo dies in the following years, i'll go for Android or at least install NitDroid on my phone (When calls function will be available). Android reminds me my first experience with Symbian with My first Symbian Phone the Nokia 6600