I think it's not just Roma that will remain a threat in the European league, considering that there will be other strong clubs dropping out of the Champions League and that will increase the intensity of the competition, making it even more exciting. I think next season's European League will still present interesting things and maybe more than just the favorite teams, we will see the same thing as this season.
Several strong European teams that play in the UCL will also play in the UEL if they are eliminated in the group stage. As Roma are favorites to win at the moment but I don't think they are the best. But we cannot underestimate them. The European League has many interesting surprises this season and I am sure we will also see many interesting surprises next season. Seeing the performance of a team from the UCL or an underdog team that can beat a big team is something that we can only see in the European league.