this of course depends on what your system's forms are meant for...
If the forms are considered "perfect" examples of your style or system, representing the movements and principals of the martial art and over time they are adapted or changed or whatever.... Then where is the true original Martial art?
Wouldn't the system be lost? Every generation would lose more and more until it bacame a husk of the former martial art.
Also who now is qualified to adapt these forms, who has the time to spend 8 or more hours everyday training, who can participate in battles with just hands and handheld weapons, who can get into fights and challenges without fear of the law and being shot? If the martial art is being adapted from sparring experience then what's it worth?
Look at karate in the seventies, there were a lot of guys sloppily beating the crap out of each other but there were no pads and they were pretty tough. Now look at it.... that is what will happen to your martial art in a short time if you let it.
anyway just a few of my thoughts on the subject.