I liked those, nice work.
The Druid's nerf makes total sense. But I'd consider the shapeshift variant to make things less complicated. However, it is good enough for some power limitation.
I had some similar ideas for a fighter fix. I second them.
One thing that is bugging me however is the spell resistance. It is, in my op, an anti-pvp measure... I believe that true balance stands on lowering the casters' powers.
Now, I found most of your ideas interesting ones, do I have permission to use them to base/complement my own homebrews and house rules?
I know the Paladin from wizards' forum is the best one, but I'd like to know your opinion on mine. If you have some time, check the link in my signature.