GPUI is developed alongside Zed and thus features that aren't useful for Zed are sometimes left behind.

I think there was a community fork recently that tried to tend to these concerns.

It's not a bad thing per se, but its worth mentioning.

Can certainly be a downside. Jaded / grumpy rust programmer perspective: I will take this over the typical rust pattern of OSS libs which have been made without being tested in practical applications!