Variant organized play? Yes! Please!
This is an especially good time for 2v2 organized play to begin because of the release of Astral Anchor (that's in battlegrounds, right?).
The main issue I imagine with team play will be matching teammates together.
Also, since spellbooks will probably have to use unified construction rules, to prevent confusion or conflicts over spellbook design between teammates, each team would be well-advised to designate one member to be the main spellbook designer of the team.
This will also make it easier for teams whose members live far away from each other. If only one member brings both the spellbooks, then there's only one chance for someone on the team to forget a spellbook or include the wrong number of copies of certain cards, not two chances. The other player should bring a backup pair of spellbooks, though, just in case.