I also bought a bargain basement Bionic lapdock and was so disappointed with the completely anemic performance under Gingerbread. I did follow the ICS development closely enough to realize the Webtop in ICS would be a very different implementation and decided to hold off before dumping it on eBay. I am pleasantly suprised with Webtop 3.0, I'd love to see some other improvements, i.e. easily expanding available memory via SDcard swap expansion or similar. BUT the Webtop 3.0 experience is very usable and makes me happy I kept my Bionic lapdock, so that is the best endorsement one could hope for of ICS as far as the Webtop is concerned.
If any developers are considering hacks/mods/enhancements to Webtop 3.0 OR getting webuntu working on ICS I would be willing to lend a hand if you are looking for help.