There are not many developers left working on legacy OS. Most of those are not even active forum participants (they hang out in mailing lists, IRC channels, etc). The remaining few would probably have a thread here about their developments and get notified about posts to it and/or come and make updates to it.

If you're developing FOR a legacy OS/device I think it's a safe assumption to make that you are so vested in it that that would not be too much of an effort.

Developers dedicated to MeeGo should be on the MeeGo forum and I don't see how that would be an issue for the users of the legacy OS(s).

To argue that a separation of the two forums (old and new) would cause a lowered development focus for the legacy OS would, I think, make most 770, N800 and N810 users smirk a bit these days as we are already the neglected ones. This way at least we might have a forum that is readable

I wouldn't necessarily argue with that point at all. But since it has proven impossible to get such a structure in place here at tmo I think I am naturally cautious when thinking it would work 'over there'.

Also, remember that with MeeGo it is no longer an OS dedicated to Nokia devices. There may well be 10's (more?) of devices running MeeGo in a couple of years. I wouldn't want to rely on 'tags' to search such a forum for, say, "N810 applications" and I don't think that it would make sense to have every device as a sub-forum under each category (app, etc). In the end I think the legacy devices on a MeeGo forum would be one category named "Legacy Maemo Devices such as 770, N800, N810, N900)".

Obviously this IS the internet and we all have our opinions. The above is just mine.