My Reddit replacement is Reddit, minus all the people who want to leave because of Reddit closing r/jailbait, r/thefappening, and r/fatpeoplehate. It's a pretty cool site, you should check it out.
The default communities are cesspools (consensus seems to be Reddit is better when they're unsubscribed)
The staff has no idea how to communicate with the userbase, a problem which has obviously gotten worse in the past few months.
The site hasn't seen a major upgrade in years and still regularly falls over under its own weight
The moderators of the defaults are all friends with each other and run each other's communities (++corruption)
Their current CEO has a questionable at best ethical history