I generally agree with what you said. One of our great strengths is that we're a team. We don't rely on a Rooney, a Fabregas or a Torres to be the difference. There are tweaks that we can make to the system that we use and the personnel, but they're finishing touches. An overhaul isn't necessary.
The RS will be lucky to make the top 10 next time if Rafael, Torres, Gerrard and Benayoun make their expected departures.
I expect James Milner (and possibly Ashley Young) to be in demand over the summer. If O'Neill carries out his threat to leave too, they'll be severely weakened next year.
If Rooney suffers a dip in form or an injury, then Man U will fall away from the summit unless they invest.
Arsenal have weakness upfront, in defence and also the goalkeeping department that Arsene has continually failed to address.
Chelsea are an ageing side and urgently require new blood.
Spurs could potentially be a shout for the title next year if they can add one or two more 'winners' to their squad.
If we can churn out results over the season, there's no reason why we can't be pushing for the Champion's League places next season. We've proved that we're a match for any team in the division. We do need to turn draws into wins against the midtable teams though.