I do still have a substantial group of RL friends who aren't going to leave and with whom LJ is my primary means of keeping in touch. I also have a readership for my translations which is exclusively LJ-based, and I don't think stopping crossposting would be fair to them. But my experience on both sites improved immensely once I created feeds for all the communities I only browsed/non-mutually friended journals.

I would be up for joining a little_details clone.