[@JBRam2002]
Let's see here...

1) With Dyn'yer'zhead's max HP being slightly on the low side, he'll probably get use out of the "Medium rest" with the Song of Rest and all. However, with the Long rest only giving half of the maximum hit dice back, I don't know how long a melee range Wizard like him can go on... We'll have to see. I'll cautiously accept.

2) Looks fine to me.

3) Approved, bringing back the same guy indefinitely would get boring.