It's a tough choice between space superiority and interception roles.
I dislike being in bombers, I feel like I'm suffocated by their lack of movement both in linear and angular dimensions. It's the same in IL-2, I really dislike being a bus driver.
Assault missions are okay too, but in the end I'd say I prefer interception role over others. A lot of it depends on mission design, though. If I have good space superiority support, then intercepting is very fun. If there are hordes of bomber wings jumping in at different sides of battlefield simultaneously while I have a wing of Dragons up my tailpipe, it's not so enjoyable as you just know this is going to go horribly wrong in a very short time.
Space superiority missions are fun when all you need to do is clear the space of fighters and keep it clear for interceptors or bombers to do their work. If you end up having to do interception in space superiority fighter, it absolutely blows because you lack the response time that speedy little interceptors give you (this is why Perseus is worse interceptor than Valkyrie, but better overall ship as it can do both space superiority and interception decently enough for most situations).
Paradoxally the Herc 2 is actually a fairly nice intercept platform but mainly because of it's ability to mount more Trebuchet missiles than a Perseus.