I'm still using my 810 daily. It is my cell phone replacement using Dialcentral and The One Ring for calls/sms on the road. I love the IM applications as well.

I would love a replacement OS that can support "fancier/functional" applications. I would most like to see either Mer or an Android port functioning. Mer for the Maemo 5 support, Android cuz I love google and all the available applications! I can not do any coding but love to try out the new software and give feed back