What kinds of things from reddit would you like to see Lemmy avoid as the user base grows?
Personally I think not having karma limits is nice currently! I understand why they were used but grinding karma as a lurker on reddit was frustrating.
Zero tolerance for fascists, and zero tolerance for state propagandists.
The fact that Lemmy is federated means you don't need to be tolerant of anyone and if they want to keep spewing bigotry and lies. If you make it impossible for them to exist in an instance they'll have to either give up or spool up their own instance that we can isolate.
Because running an instance requires some organization, maintenance, and money, anything that becomes too isolated from the rest of the fediverse will eventually die out.