I have more to share on why I chose Micro.Blog, but one of the features that were most important to me going forward was “Titleless Posts.” This allows you the same basic writing flow as a Tweet (or, I guess, Toot these days).
Most feed readers are a bit behind on this. Dave Winer explains a bit more about this.
My feed reader of choice, FeedBin has had good support for this for years. The support for Twitter is especially good and has made it the primary way I keep up with Twitter and avoid the mess (sometimes) it has become.
Hopefully, Mastodon support is on the way.