Development went pretty well for it. A number of them definitively made some major improvements. One of the newest was Ice Cream Sandwich of course. Nothing is perfect, but things work. Many G2X users have been suffering from a few things that end up taking their device from awesome to oppasume. Well now XDA memeber flak0 has gone and created a set of scripts and tweaks to give your G2X ICS running device the life it needs back to help you survive a little bit longer.
Looking through his thread, everything seems pretty straight forward. Simply download the flashable file, flash it and then hit up a script manager app like Script Manager. Once in, just run tune.sh and you are all set. The dev also makes note to do a back up before hand in case you fry something. The thread tells you what the tweak includes along with instruction for you to manually tweak them on your own if you do so desire.
If you are rocking ICS on your G2X and need to bump up the performance a bit more, be sure to go check flak0′s XDA thread and let us know how it all goes.