As much as I agree with a lot of what you've said in recent posts Rob, I'm not sure we are any closer.
Correct we've not been bullied as much by teams like Stoke, but I'd say that came last season, picking ourselves up and beating Stoke after Ramsey went off with the broken leg just typified that.
We did beat Chelsea well with some fantastic football, which is something we've not done for a while, but when you consider just how low they were at that point and consider just how incredibly nervous we looked after Drogba pulled one back, it's not the greatest achievement. If that game were played again now, having conceded one the floodgates would almost certainly have opened.
The Barcelona victory was fantastic but had the officiating been half competent Barca would've had at least another 1/2 goals before we'd scored so the best result we would've hoped for was a draw - exactly what we got last season.
Yes, we got to a cup final, but we fielded much stronger teams than we normally do throughout the competition and regardless of the luck involved with their goal, we once again failed to make our superiority count and put the game beyond them.
You make the point about not using the extra squad options well enough yourself and whilst we have seen young players maturing, hasn't that been the case for 5 years now? Whether it be Fabregas coming through, Song stepping up or Jack/Theo this season, overall things haven't changed because we also let others go the other way. Given their attitudes, I was glad to see the back of the likes of Ade/Flamini, but their importance in the side when they left was massive and we've not replaced them quick enough/at all. If we were filling the positions where players left quick enough, there wouldn't be an issue, but we simply aren't.
In previous years we could look forward saying that with maturity we will do better as that genuinely seemed the case, but surely this season is proving that age =/= the maturity we need, it's leaders with experience that will add the maturity not another trophy-less season. We've had numerous injury problems in our run ins in recent seasons and so you look forward with the thought that an injury free side will make the difference next year. But, this year, we've not sold players, we've attempted to add to the squad and we've not suffered the same sort of injury crises - the likes of Cesc/RvP/Nasri have been fit throughout the majority of the crumble period, but it's not made a blind bit of difference, if anything the crumble has been worse this year. Vermaelen has been out throughout the season and that has made a big difference imo, but it wasn't early on that we were struggling with his absence, it was after 6 months without him, a time in which we should definitely have learnt to cope. You can't base success on having a single player stay fit throughout a season, especially when that's an Arsenal player. If he has been the missing link we have been terribly unfortunate, but we can't risk going into next season saying that he definitely was the missing link because if he wasn't, we'll just get yet another repeat.
Whilst it might seem like we're moving forward, I can't help but feel we're stuck in the exact same spot.