There is so much software (a shitload in this industry) that relies on not only superglobals, but specific PHP3 capable bugs that I don't think you'll see anyone but the big boys who have dev teams moving into PHP5 in the near future.
Suck it up and deal with the shitty non-static PHP4 classes, man.
I'm saying this from both sides. I have not had a single host that's even considered going 5 native (without .php5 extension and a CGI hack or something), or without much work. This includes MANY mainstream sites as well.