Mark Waid could write anything and everything, and I'd pay money for it. He'd be my choice too.
Meuh I don't like Waid's Spider-man. He seems to treat him worse than Slott. Keep Waid away from Spider-man! I could not take that.
My picks would be Joe Kelly, Kelly Sue Deconnick (she can and has written Spider-man really well), Yost (he's currently writing Avenging Spider-man though so yay) or JMS (again) are the only ones I can think of off-hand.
I think Waid had a much better handle on Spidey's abilities than Slott personally. At least during the BND era his Spidey seemed to be much stronger and durable than the other writer's of that time. He does tend to have more humiliating or embarrassing things happen to Spidey, so those are valid complaints.
@VeganDiet: The original Spidey suit in Age Of Ultron art previews,and the descriptions of SSM 7+8 that says Peter is stepping up.......Slott said that he had ready 6 issues of SSM when ASM700 and SSM1 came out....he saw the reactions and Marvel decided to turn things up again and we see the description of 7+8.......connect the dots my friend!
That art was finished before SSM was even out man. Hell it was done. before ASM 700 or 699, I think. http://www.comicbookresources.com/?page=article&id=42269
Not to mention the SSM Age of Ultron tie-in has the Superior Spidey Costume on the front. http://www.comicbookresources.com/?page=article&id=42448
I think I'll wait to see the rest of the issues before I connect any imaginary dots.
I know he kind of purposely removed himself from Spider-man related stuff for a while, but I'd love for Tom DeFalco to come back to Spidey.
I think Jeff Parker would write a good Spidey.
Just for the record, I still have mostly positive feelings towards Slott's run. I wasn't super happy with SpOck taking over, but Superior Spider-man #1-2 were pretty good. So I hope he gets 2-3 more years on Spider-man.