I honestly like it better now. Granted, I don't watch it as often as I did when it was first one, but I saw most of season 7.
While I do understand the gripes about the main characters being pushed to the side, it has a more cohesive feel and comedy to its story. They've shown that they're not afraid to take big risks, and it pulled of with the Stakes arc, which was surprisingly enjoyable.
I agree it isn't what it was when it originally aired, but it is certainly better than the garbage Flame Princess era.
All they have to do now is focus more on Finn and Jake again and it would be better than the original seasons.