This is a post for more transparency between players and decision taken on the developer side.
So you may not be aware of this but in current beta there is 2 mods that are now considered as harmful. Idle engineers (v2.0) and UI mass fab Manager FA.
The reason behind their ban is that "they are a pile of crap code with possible breakages and slowdowns".
The decision that has been taken is to blacklist them until "someone wants that functionality so desperately, they can improve the mod."
From what i know, hussar is working on an other version of SSB that will include idle engineer and eco manager (at least some feature of it, i'm not sure if that will take in count the mass fab manager). I do not know if its mod will ready before beta get into normal balance. So it would be nice to hear hussar on this.
Otherwise i would be great to know if crotalus has any plan to fully introduce "mass fab manager" into ecomanger. And if there are some modders than are willing to fix "idle engineers (v2.0)", a v3.0 already exist but some/lot of people still prefer the v2.0
You can have the full information of the discussion behind the blacklisting here : https://github.com/FAForever/fa/issues/1751
Btw, there is also Ecomanager, notify and ui party (and maybe others) being ban in "FAF develop", they are already fixed by Icedreamer (and CookieNoob for notify and some others), he didn't upload them yet but player using this mods will need to redownload when "FAF develop" will be introduce into main game.