I don't think SM is on a step, where suggestions like these should be seriously considered. With different variations of weapons people can make, it feels as an overkill. I'm all for proper weapon balance first, then some alternative power sources after that. Considering the ammunition, I think it is much better as a separate Artillery weapon replacing the Pulse system.
Then sure, make some different types of ammunition and implement this weapon into the current master/slave system and make Effect subsystems having a reduced effect on an Artillery master.
Then sure, make some different types of ammunition and implement this weapon into the current master/slave system and make Effect subsystems having a reduced effect on an Artillery master.