The biggest thing that bugs me about Mastodon is the lack of the simple ability to just "like" or agree with a post. I like a voting system. Give the idea that what you posted is some sort of uncouth or an unspoken unique idea. I don't want it a part of my profile via "boosting". I just want to say "hey bro, yeah, that's neat" and move on.
That's exactly what the "Favorite" (star) function does on Mastodon.