Clan Battles have been pretty good!
The structure leads to quicker games. Taking and controlling caps is paramount. More than a few times the team with the material advantage lost on points.
At least at the lower leagues the meta is not solved. Tactics vary wildly and you can often be caught completely off guard. In a way the absence of CVs actually helps here, as there is no "easy" spotting. So you spend quite a bit of time wondering where that unspotted cruiser/dd went. Only to have it appear in the most inopportune place.
The biggest issue for my clan is we'd like to add more players interested in Clan Battles, but most everyone who is interested in Clan Battles already has a clan at this point.