More great ideas :) I'll review in more detail when I get home tonight.

[Edit] Updates below :)

limiting amount of resteems per day based on steem power. So new users cannot flood a feed with too many posts

Added

Allow great comments to be resteemed

I did exclude this because it would be a difficult feature to add, and I think most good comments are good in the context of the post they are in.

Some sort of unlockable customizable avatars with colors at certain levels (minnow that you could add customization earned from commenting, blog posts etc. unlocking a new fish all the way up to some sort of holographic whale or whale gif) this may entice some rpg fans who enjoy the concept of leveling up and showing off accesories. Similar to skins in call of duty or rainbow six as well as world of warcraft etc.

This idea is to a large extent already suggested. The recommendations that are there are a little different, but it is close enough that I am going to exclude this just to keep the list from growing too large :)

Daily goals that when hit allow for a token that can be used in a lottery or slot machine type game where you can win sbd

Added :)

Thanks again for all the great ideas!