I also see Arsenal as a team that can still be quite strong next season so that some of their closest rivals last season also still have to be wary of Arsenal as their competitor in the race for the Premier League trophy. Likewise in the Champions League because Arsenal could perform better next season and be able to reach a quite crucial stage so that their rivals will still see Arsenal as an opponent that needs to be eliminated early before heading to the quite crucial stages in the Champions League.
These expectations are very similar to what we expected last season but in the end Arsenal were nothing more than a mediocre team in the Champions League competition. They didn't have the conditions to get close to the semifinals and instead they had to fall after successfully qualifying from the group stages.
I don't think any team is afraid or worried about Arsenal's presence and in fact other strong teams are wary of teams full of history who have always been regular champions of the league. Maybe Arsenal is very scary for any team in the same group but after that they are nothing more than a team that can be knocked out easily.
Arsenal fans have been burned in the Champions League. They get all hyped up, then choke. Last year was no different. Looked good in the Prem, but ran out of steam when it mattered most. They basically handed the title to City, and it sucked, dude. But here's the deal. This sport is about momentum. Arsenal showed they can finish strong in the league, and that's where it starts. I know they've been a bunch of bottlers in Europe after the group stage, but dwelling on the past isn't going to help them. They gotta rebuild, both tactically and mentally, and dominating domestically is step one. If they can take the Prem, that gives them the confidence they need to go up against the big boys on the European stage