They are at the level of fine tuning now; all components are in place for extremely smooth transitions and unlike before, they can legitimately go and entice the best to come in and replace what exits (we'll see this with De Bruyne). Nobody else is in position to do this; Liverpool could've been but their transition was a disaster and utterly reliant on constant jackpot signings, which is nigh on impossible for real clubs (who can't simply discard or leave what doesn't work in squad nether realm).City will be hard to stop in the next few years. But the premier league is getting richer and richer and the standard is getting higher all the time. Last season did show that more and more teams are capable of taking points off them than before. The problem will be European football which the standard isn’t as high which paves way for them to match our trophy hall very quickly.
When it comes to signings, it could prove to be diminishing returns. They’ve got a pretty awesome team as it is and there probably aren’t that many players that can improve them drastically. I think it’s more likely that good signings from other clubs will improve them more than what City can find.
Im also not convinced City are going to be blown wide open by any charges. Their owners are too powerful and too wealthy to allow their investment to go down the drain. The league won’t want their image to be totally tarnished either by stripping any titles. I imagine there may become an acceptance that City have cheated the system alongside fines and embargo, this is the best case scenario.
There has to be realism; perhaps their greatest advantage from cheating is the surfeit of talent that is fresh and raring to go at the point in the season when other clubs are flagging and managing fatigue. Until anyone can utilise a squad how City can, they are way behind the curve, before the football is even factored in.
And regarding teams 'catching up' in terms of taking points etc. That's a byproduct of them finding the system they now have. It's odds on not to occur again.