Everton are certainly a team to respect. Stuck by their manager, built a team that works as a team without spending massively.
Villa are earning a fair bit of good will from me as well.
But breaking the big 4 does involve more than 1 season. However things are not looking good for Chelsea given their manager related idiocy, or Arsenal given their slump and stadium costs. Villa could take advantage quite easily, and Everton won't be massively far behind.
Hopefully Man City will be. I used to like them. But we really don't need success generated by more financial stupidity.