I think people need to keep in mind, that in real life, things are not always balanced. and so it should be in a good game, you will not alway find balance in everything, some things should be more powerful.
Now don't get me wrong, I think Paralysis could use some tweaking to get it right, but I also accept that it is generaly a very overpower technique. My grandfather was Australian Special Forces, and he could paralyze you with a specific nerve hold. Now I'm sure the rowdy guys he helped through out of pubs would agree that it was unbalanced.
The point I'm trying to make is Paralysis is a powerful ability, I think instead of trying to nerf it, it should be a harder spell to master.
Paralysis was OP because a 1s spell would last in fact 5-6s the time it took for the target to stand up. They should have implemented Paralysis not as that ragdoll effect but as a kind of complete petrification of the target in place so that as soon as the effect wear off, he's back in condition to fight instantly.
I missed your post before... that is actualy a realy good idea. Fatigue drain should cause ragdoll, and Paralysis could just freeze them in place like in morrowind.
Not a bad way to even things out.