Yeah! Drill it!!!
As you can see in my signature, I have a be-bop kit with an 18" kick. 18" RC kicks are somewhat rare, but not impossible to find. It's also the very common piano black finish. If it was a Cobalt Blue kick, I would not even consider taking a drill to it...
I have toyed with the idea of adding a floor tom leg mount to the side of the 18, to make a kick-mounted cymbal mount.
Yamaha never offered this, as their "system hardware" allows all sorts of configurations with a few standard bits and pieces.
I currently use the tall single tom mount arm in this kick, with a cowbell mount clamped to it,(MORE COWBELL!!!) because I'm not crazy about clamping a cowbell mount to my new replacement lacquered Yamaha hoop.
But I was thinking it might be sort of cool and also have me dragging around one less cymbal stand. And since I'm migrating to the (Wicked heavy Sumo Dude ) 900 series stands for everything, that will be about a 20 pound weight savings (although I have no gigs at the moment with a three-year-old to keep out of trouble Laughing H ).
Thoughts?