(Taken from viewtopic.php?p=587044#p587044)Solo antags are now restricted to only being able to join conversion based antags unwillingly.
Also know as, they cant just walk up to people and ask to join or allow themselves to be converted.
A few things have changed since then, the largest one being that heretics cannot join the cult under any circumstances as of PR 69725. Revs also now end the round when they win as of PR 76728, so this gives solo antags who are worried about their round ending early and aren't confident they can turn the tide for the station an option to participate in a satisfying manner without having their entire antag round scooped.
I think this warrants a revisit. We already allow situations where antags can work together towards a common goal, with all solo antags being flashable into revs and almost all solo antags being available for cult conversion. I don't see an issue with allowing this. Lepi's main concern was the consolidation of power, but the only antag that I really think would benefit from additional power here would be traitors, and they're making a pretty significant trade-off by doing this - losing the ability to go against that antagonist for their own objectives in exchange for participating in the cult.
Revs are obviously involved here, but you don't get any special powers for being a rev, so I don't think the "joining for power" thing is applicable here.