This is quite a positive development. I have only a few thoughts.

All regular self-promotional steemit links should automatically go in the recycle bin. Only allow steemit links if they involve reddit-facing activities and are clearly in everyone's best interests.

You'd get a lot of users, but not many more investors, if steemit was made known to users of /r/beermoney.

There needs to be a much more comprehensive and informative FAQ, new user guide, and wiki which all would have to be custom-made and filled out than the stuff already on the sidebar.

Curation groups, apps, and discords for communities should be rolled into one sidebar entry.

Be wary of having too many different types of daily threads, it could potentially make some of them seem like ghost towns if daily activity for certain things aren't as high as others, might be better to consolidate so they seem a bit more active.

Also, I noticed that you have a dolphin flair, such things might be attractive to future potential investors in steemit, sure, but right now class issues are kind of a hot-button topic on reddit and within the youth population the world over so it might be better to just have humorous/clowny tags instead.

One thing I just remembered, there was a lot of controversy over some subs getting shut down over the new website legislation in the US as well as some bartering/trading/advertising activity getting banned as well on reddit, I don't know why I'm mentioning this because steemit is run by a US company so they probably would want to avoid the same stuff.