For me lack of activity here is mainly that Warhammer & Attilla setting/periods don't do anything for me.

.org kinda died back in Rome1 time period, most of the modding activity happened over at twcenter & has remained there.
I never joined there but I certainly lurk.

I think a lot of new players don't know of the .org & stick to official .com.

I also disagree that Rome2 was really that bad.
Launched state yes but patched it mostly works pretty well.
Fundamentally they have a comprehensive list of factions with good unit rosters well modelled & a bunch of functional fixes to issues from the 3D map.