The biggest reasons I've strayed from mtg in the past years is the ridiculous power-ramping in recent times. Two summers ago a friend and I proxied some fun agro decks to play each other with and we were both blown away by how prevalent absurdly powerful and cost-efficient 2-drop creatures are, most of them 'new' (by my standards). And then there's the fact that prices are going up and up. Back in Ravnica and Kamigawa, the biggest, baddest, most expensive cards in a set were $20~. Then tarmagoyf came out and Jace and blah blah blah (stopped caring when type two cards started regularly hitting above that $30 mark). At least that's my impression of how things worked out. And I'm not a fan of the changes they made to legendaries. Oh, and dont get me started on how dumb Planeswalkers are (imo) ~rages softly
But Zhurai is right, type two combo decks arent really what you imagine when someone says combo. storm goblins was hardly gimpy, but I do agree that legacy combo decks are unfortunate in that they are much more fun for the person playing them than the person playing against them. No one wants to play casuals against 12 post for tens of matches (sad day), and it's even worse for something like dredge or painter's servant, which basically live on an island. Goldfish every day