The case about making the A-Class a flying catamaran is closed. We have a rule stating that Hydrofoils are not allowed, this means adding "something" with the sole purpose of producing vertical lift.
The reason for this is that once you are flying, it really doesn't matter if it's a cat or a monohull.
The box rules about the dagger boards has limited the way you may shape and/or cant your dagger boards, and having the text about measuring the beam of the boat with dagger boards all down and up flush with the bottom, takes care of T-shaped foils - cause they can't be all up flush bottom.
So what we are talking about here is a max beam of 2,30 meters and boards that may not come closer than 1,50 meters from each other. It's fair to assume that the hole for the dagger board at the bottom of the hull is placed approximately 15 cm from the extreme beam, leaving us with 25 cm per side to cant or curve our boards!
It's really not that much if they still have to be able to come up through the dagger board case.
In my opinion this gives enough room for playing around and maybe improve slightly, without being able to create revolutions that will set everybody else out of the competition...
The rules as they are today allow all that and restricts all that, so let's not change anything. (If it aint broken don't fix it)
I think it's marveless to have a class that over 50 years only has seen the need for 9 rules. Let's not change that - having to many and to often rule changes also frustrates the sailors (ask F18 sailors about that...)