I hate to be presumptuous about anyone's age, but maybe Boba is one of those things you had to grow up with to appreciate as much. Like to Gen X, this was the guy who caught Han and put him out of the story for awhile. A mystery but a capable villain, as was said above but obviously anointed by the creators of the setting as the best there is at what he does. When you're seeing this at age 10, that shit sticks with you.
I also think a lot of the EU stuff that expanded on this guy was worthwhile. We pretty much demanded it.
I'm 44, literally the oldest memory I have is I remember being like 3 years old in a movie theater and watching Empire Strikes Back, my brother sleeping in his seat (he's a year younger than me). So I was huge Star Wars fan and grew up on it, had tons of Star Wars toys. My favorites were those Star Wars miniatures and I had a lot of the Empire Strikes Back stuff. The hoth monster that Luke chopped the arm off of was prob the biggest out of all the miniature figures I had.
Did I think Boba Fett's look was cool? Sure. I have *NEVER* liked his resurrection in the old Star Wars novels/comics that they decided to keep. When I first found out about it was probably when I was in high school and first read some Star Wars novels and found out Boba Fett was alive in it.
As I said before when you break the character down he wasn't really that impressive. The most 'impressive' thing he does in Empire Strikes Back is manage to stay hidden and wait for the Falcon to leave and follow him. The actual 'capture' of Han Solo? He doesn't pull that off on his own. After he tracks them to Cloud City he contacts the Imperials and they show-up and THAT is how he gets Han Solo turned over to him.
They show up to bust Han out in ROTJ and he gets knocked into the Sarlac Pit and becomes a snack for it. That's the BOBA FETT story.
A show's viewers reception/feedback shouldn't live or die based on needing to have the viewer have some kind of 4 decade long obsession with a childhood nostalgia for a bit character.