Interestingness and positivity are not in tension.

People often assume that someone who is widely beloved must be boring.

Banal, bland.

But that's not true!

It's possible to be seen as neutral-to-positive by just about everyone and still be interesting.

Dwayne Johnson (the Rock).

Dolly Parton.

Just because everyone has a positive take on them doesn't mean they aren't distinctive and interesting.