http://www.robelle.com/library/smugbook/manmonth.html
Please purchase and read the book listed above. It might explain to everybody one of the many, many reasons that even if the devs did need your help, during post-patch time is definitely not the time they need it.
If you really want to help with the development of MQ2 start by learning a whole lot of C and a whole lot of how to program. Then continue by downloading and archiving the versions of MQ2 as they come out and the versions of eqgame.exe they go with. Look at each change to MQ2 and figure out why and then figure out what changed in eqgame.exe to make it have to happen.
Once you get good at that, after a year or so. Start talking to the Devs privately. Send them the offsets after a patch. It really is simple once you understand MQ2 to the level necessary to make all of the other changes that have to take place. Fix part of MQ2 on your own and post it for comment in the VIP section.
Because the real bottom line is that trying to help anyone figure this stuff out is absolutely no guarantee that they'll be able to do any of it on their own and that makes it a waste of time to try. Sure you may find the wunderkind that after 10 minutes of explanation understands all the intricacies of MQ2 and EverQuest and can pick it up and run with it from there on but this is so statistically insignificant as to be pointless.
If you want to help the Devs right now because you want to make sure that MQ2 comes back as soon as possible send them some money. It doesn't have to be much. Whatever you can send is more than many including me have sent.
So in order of least to most important the things you should do to help MQ2 come back working as quickly as possible are:
3) Thank the Devs for their hard work.
2) Send them money.
1) Wait patiently and leave them alone.
1 and 2 are kind of a toss up, preferably do all three.