Personally, I think that giving players an option (which is what a separate server would be) is never a problem. However, I'm not sure that I'd like for everything to go back to the old days. I think having a server that's locked @75 content could work for those who like old school parties. I would, however, keep the current xp awards and not go down to where it took a year to make it to 75.

I mean, yes, you can currently make old school style parties and they are somewhat better for lack of competition (my LS has them scheduled weekly and the xp isn't half-bad). However, outside of scheduled LS events, putting an event like this together is next to impossible.

I would certainly sign up for this kind of server if it did become available. Also, note that these servers are very VERY popular on games that have instaured them (Everquest). You may also notice that making this type of server may actually bring back quite a few people.