Make wall spells work as stated. I think a fix as simple as this, well, i shouldn't say simple since I don't know the difficulty of implementing a fix.
Also, blizzard needs fixed, but one thing at a time, lol.
but I really think a fix this small would make the world of difference.
and its frustrating to be in the 9th iteration of the Official Skyrim Patch without a fix like this.
especially when it is so often to hear someone call destruction underpowered, etc.
I also think the ability to dualcast master-level spells is something that would help, and we should be able to do.