It would certainly be easier to do that EQ in a group, but it also makes it more limiting. Do you really want the exact same EQ changes (frequency, Q, and level) on every drum? If so, this technic is certainly better. But more often that not I find it isn’t exactly the same and so it is better to do it at the channel level. Now of course you could do both, some unique EQ at the channel level and some “universal” eq at the group level, but that gets harder to manage (ie remembering where each EQ change was made and why you made it). Personally I like to do it at the channel level because of these reasons. But the nice thing about this job is that there is no “right” or “wrong” way of doing things. If a particular process works better for you and it sounds like you want it to, then it really doesn’t matter how you accomplished it! (My opinion certainly does not/should not matter!)
Thanks for sharing. It’s always great to hear other people’s techniques and the reasoning behind them.