I love the way you reasoned this, just that Arsenal sucks too much when it comes to Champions League they don't make it far at all,I think they are mostly after the league title they've won it before they can still win it again if they are willing to work more although they already work enough I don't just know why they fail when it comes to die minute game s... and the funniest part is they make the silly mistakes to clubs that you can't expect maybe they overlooks them don't know, they need to understand there're no small team again and max effort is required for all game.... let's just hope they perform flawlessly this coming season
That is something they have to do because with Arsenal's current strength, it will be very difficult for them to try to compete for trophies in several competitions at once so they are doing things that make it possible for them to get trophies even though they still haven't been able to get them until now but I think the brand effort is quite good, especially for domestic competitions where they can even compete until the final match and that is much better than last season.
Arsenal is indeed a big club but with its current strength they will not be able to win trophies at once in several different competitions so it is quite natural for Arsenal to take several different actions by focusing on just one competition. But that doesn't mean they aren't serious about other competitions, it's just that when they only have one target, for example the EPL, they will prioritize it more so that the results are maximized.