I don't see a reason for "type 2" in Mage Wars. It isn't a collectible game, so there isn't a need to pay $1500+ each for 4 copies of an overpowered card from a long out-of-print set's random pack in order to compete several years later. Besides, any poorly designed/balanced cards from early MW sets tend to be on the weak side, not overpowered, so while they may not get played in high-level competitions, at least they aren't breaking the game. MtG has plenty of duds on the weak end (probably 80% are unplayable) and they still need to ban cards on a regular basis. I prefer that MW chooses to errata overpowered cards (like Battle Fury, Temple of Light, Hand of B-S) and perhaps some underpowered cards (like Gate to Hell and Goblin Builder) and go from there. It's a lot better than nullifying an entire expansion set by rotating it out.
Besides, there aren't 3-4 major expansion sets per year, along with a new core set, so even if there were a desire for a "type 2" format, there wouldn't be a sufficiently large card pool. Part of the reason I left MtG was I couldn't keep up with the sets release and rotation schedule. Even if you played draft/limited, you were constantly learning about the new cards. Takes a ton of time and wheelbarrows full of money to keep up with "type 2" MtG. Rather, I like that you can build a decent MW spell book from the core set and one or 2 expansions, especially if you focus on a couple mages or schools. You don't "need" them all - although it's nice to have the variety and options available.
Personally, I liked the stories and achievements in the organized play kits. I thought it was fun that you could either earn points/prizes by winning or by playing thematically and unlocking achievements. Sadly, the OP kits and story ended over 1.5 years ago with no indication that they'll resume.