If we can get the haks + CEP onto a CD then I can see the benefits of this.
I doubt that we would lose established players due to download size, they're all addicted now and won't be able to get away even with this as an excuse
The problem with download size that I would forsee is the loss of incoming players, players who haven't been hooked or are looking to just try a PW without the need to download huge files. Right now, our hakpaks aren't unreasonable, but requiring a 200MB download would definately be pushing it, especially on those with dial up connections.
One potential way to avoid this loss of new blood would be for each world to designate a server NON-CEP. Preferably a server that is pretty established and that has enough of a player base. For Avlis specifically, I would suggest Mikona. I know that Orleron wanted to keep Mikona hakpak free for exactly the reason I spelt out above, to give new players a chance to try out Avlis without needing to download hakpaks. I believe Mikona is still a good choice for this. Mikona is pretty "complete", not many areas are being added to it and most importantly, Mikona receives a decent amount of our player base.
I can't give a suggestion for the other worlds in COPAP as I haven't really had a chance to visit them, but I would suggest a similar course of action, leaving one server non-cep so that people looking to try a PW can do so without having to download 200MB.