I liked 1 & 2 - 3 had too much interference from Studio and Marketing, and it looks like 4 would have had even more.
So I think they were right to bail. Plus, at 34, even allowing for his looks, Maguire is probably moving out of the age range that makes sense for Peter Parker.
I don't mind a change of director and actor, but I don't want a full reboot with a new origin. They should jump in with Peter already 'converted' and at most maybe have some short flashbacks if they want to show the new Peter Parker getting bitten, etc.
Try to be reasonable... its easier than you think...