I'm not doubting your skill, but I haven't seen any real change in the game since I left 2.5 years ago. If anything, I've noticed a weakening overall of players (not you, but in general). Probably because of player attrition.
The meta seems the same to me, although perhaps you have improved the meta for veggi enauts, all the other races are the same I think.
Mag!cGuy although a good player is not a very good example. No offense to Mag!cGuy (who's replays I first started watching and learned a lot), but probably due to waning interesting, he was already starting to decline in the rankings before he took a break.
You could similarly point to other players who have come back and are doing great, I had to edit this post, because I thought I remember someone recently who just game back (other than GreatGonzales) and had played a lot of games and was doing great, but I can't seem to remember who it was.