There are a lot of little things and a few deal breakers but I’m going to tell you the funny one because I don’t want to write a 10 paragraph essay on why I hate GIMP far more than is rational.
The name bars it from ever being something that most companies would consider using.
I really don’t want to get into it over something that I don’t have any influence on tbh. There are a lot of things that I could rightly point out as issues ,but if people haven’t been willing to listen to the hundreds of people that have said the exact same things that I would say, I just don’t see the point. GIMP will keep on being GIMP and thats fine.