Personally I'm loving seasonal atm, best one so far. I played upwards of 30 games of it and my experience has been that Artifacts aren't a staple of every deck, not even close. I've encountered maybe 4-5 games where they have been played, 3 Sihls and one Ale. I was running artifact removal for a bit but removed it as they just weren't getting the return.
As for "fixing" seasonal... it's seasonal, it's a fun game mode that isn't meant to be balanced? The over reliance on purify these season is a perfect example.