My biggest beef with Magic isn't the lands system, but that the game is fundamentally stingy with cards, leading to many non-games, and/or turns where you pray for the right top-deck and don't get it.

(This is one major reason I play Netrunner instead, where your action economy can be spent on draw. You might have weak turns, but never non-turns.)

Given the huge cardpool, there's no real way to "fix" MtG that couldn't be exploited in the metagame (aside from limited, or social formats like Commander).

But that aside, I think there are two relatively minor fixes which would go a long way:

- You can spend your "land for turn" to exile the land instead, and draw a card.

- Before your starting draw, Scry 1.