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.
Here admin has even more power, except it is limited to their own instance. So it is more on the user to be prepared. You don't want to be too attached to your data on a single instance. The instance might be abandoned, down, gone; the admin might go crazy. And the solution isn't to have the admin be more reasonable. The solution is to hedge your bets on multiple instances and multiple communities.