I think Memory is going to be a very LOVE IT or HATE IT topic of discussion here...
Personally I like the idea and the implementation of it very much. Actually DOS2 in general I'm finding I like a lot of; it reminds me of Ultima FOR SURE! But I digress.
My only real issue with the memory system at the moment is the balance of it, which Larian can change as they gather more data. I like that I'm restricted to a limited number of spells/abilities but I feel that it's currently a little too limiting. Some abilities feel like they could be 0 memory cost abilities or it may make more sense to tweak the formula for memory around. Instead of 2 points per 1 slot, maybe some other distribution makes more sense (fibonacci? 1st point = 1 slot; 2nd point = 2nd slot; 3rd point = 3rd and 4th slot? etc just an example; this blows up too quickly but it gets my point across)
Another thing to keep in mind is that Larian can also play with the frequency of skills being attached to equipment (as well as memory stat). It was EXTREMELY rare to find a piece of equipment that gave you a skill attached to in DOS1 whereas in the alpha they're ALMOST common occurrence. They're still expensive and rare, but you see them frequently enough that I'm almost okay with how few memory slots I have. Plus my main gripe with wands in DOS1 was that skills could only be used 3 times whereas in DOS2 it seems they're always (at least now) unlimited uses which is WAY better.
That said, I still think Scrolls are probably the answer for this. - Kyle Olson
Much like my points above; this is another option. Scrolls felt a little more precious in DOS1. Yes I used them but I often found myself hoarding them JUST IN CASE I NEEDED THEM. But even when I would die in combat, I'd just reload and try again and STILL hold onto the scroll because the NEXT fight is when I'd need the scroll, obviously. If they were a little more plentiful or it were a little more simple to craft the lower level basic scrolls (like say a Rain scroll, and SPECIFICALLY the scroll you wanted) then again, the memory "problem" begins to be mitigated (which again it isn't a problem and I don't like that word given the connotation but for lack of a better term it is a "problem" currently).