A higher AR wing with higher span, and or a more flat wing (typical race wings) will have less roll tendency.
Which IMO is really bad for freeride, as it will almost only ride straight, and be horrible to turn with.
It is not so simple though, as a well balanced racelike hydrofoil can still have good turning ability, even with a relatively high span or quite flat, so it is all about the full balance of everything, and not just theoretical views based on general properties
I think the pitch stability, which is better (less sensitive) with lower AR wings, are the most important for being able to learn air transitions, apart from being able to ride at really low speeds without stalling.
Have not ridden that many different foils and wings myself, admit, only 8.
But almost every single one have had too much roll stability for my liking - only a few felt good and not too "stiff".
So I dont see roll stability (stiffness) as a positive thing, not even for air transitions - but it seems we dont agree on this one, and fine with different likings
The main reason why wings have anhedral or downswept tips, is because otherwise they would be almost impossible to tilt/turn and carve in a pleasant easy way.
But agree, that bigger wings no matter what shape and outline, are easier, yes
Also agree, that IF you can force/turn the board around, roll stability will make it even easier, at least never be a downside when stepping around
So higher span, more area at the tips - will make the wing more roll stable/stiff so it will not roll/turn as easy.
When up hydrofoiling for the very first times, one is amazed that the wing is TOTALLY stiff and you dont need to balance anything, it does this fully by itself.
And later you will find it is actually difficult to roll this thing, because of this
PF
PS: I still suck at air transitions and fail most of them, so dont take my word for much
Especially with the 2 strap setup, instead of 3, it is hard.
Easy with the 2 strap when not foiling though, just as on a waveboard
On the other hand, sometimes when you CAN do things fluid, you focus on different aspects instead, and forget why it was difficult at first