There are advantages and disadvantages of playing in the CL and EL.And that's the kind of mantra I'd expect from a Brighton fan of about 5 minutes standing.
Let's be clear - we don't, get on with Bournemouth, and never have. If Bournemouth trump our Europa league appearance of 2 years ago by qualifying for the Champions League, I am going to be very pissed off.
My Malmö FF supporting friends often prefer the EL adventures because you go to less sanitised places. The biggest clubs in Europe are often very sanitised, touristy entities. Most matchday experiences will be very similar and the results will be shite. Of course Brighton and Bournemouth would have a better chance of doing something in the CL, but it would be impossible to win it at the first time playing there.
Meanwhile, Europa/Conference league brings a good chance of winning a title. Obviously the idea of Brighton facing off with Real Madrid or Barcelona is... maybe the ultimate dream, but fans of a team winning the Europa League final will have more fun than fans of teams losing 5-0 to Madrid in a CL group stage.
But yeah I might be grasping for straws... qualifying a couple of times for the CL is a big step towards becoming a long-term highly competitive club, so that'd be nice. Also allows a club to keep all the best players, which is otherwise nearly impossible unless the club is either a giant or utterly shite.