Yeah, I think the only thing that can even justify a define is that the combat changes aren't finalized yet. So, server admins might have to adjust their content multiple times while things get all tweaked. The define would just let them avoid the adjustments until everything is finalized. It would only be temporary. We can't have defines and rules to keep every original formula, otherwise the code would be quite a mess.
For most of the experienced server admins that have been running a server long enough to actually have to do some work to adjust their content, it shouldn't be too hard for them to figure out how to compile it if they have to. And, if that is too much for them, they can always wait out doing an update to their code until everything is finished.
For the new servers, these changes won't even be noticeable, as their content will be made around the new settings and they or their players won't ever be the wiser.
It is always a pain when something major changes. But, without change, nothing would ever get better. I am sure many of you remember when the new AC changes went in about a year ago and then Attack Rating and Accuracy for NPCs. Those were some big ones, but they have been a big help in making combat feel right. I am sure the latest changes will help hit chance considerably. Really, hit chance has been horrible in the past and it is nice for it to finally be getting a good fix and more options for tweaking it. Maybe 2 handed weapons will actually be a valid choice over 1 handed again
I will try to get the define in tonight. I think a temporary define is a good solution. Admins will still have to make changes after it is removed for good, but at least they will only have to make the changes 1 time only (for a while again anyway).