mh I missed this post somehow, sorry.
Regarding your request, several of those Forums were deleted/merged/renamed because there was either little to no activity and/or because they were rather redundant.
For example if we re-introduce a Missle & Space-tech forum..where would you post a thread about new missiles from Iran or North Korea? In their local forum or in the Tech-Forum?
If there are specific suggestions for new Forums, that do not cross over with already existing forums (or could be clearly separated from the existing ones) we will certainly consider them.