In order to help with happiness along the lines of the drum department it would be nice to do a couple things.
Unfortunately the one big thing I can't do, even though it would cause drummers to be vastly happier, would be to get an awesome set of DW or maybe Gretch acoustic drums and mic them up with $25,000 worth of microphones in a beautiful room with a rack of tremendous mic preamps. That ain't happening. Both the noise and the cost of such a project put it out of range.
So what can I do? Well for one thing I do not have enough cymbals. Drum kit "size" is always measured in drums. But honestly after a few toms what more are you going to do? Hit drum go boom. How many more pitches and timbres of toms does a person really need? Exactly. A 5-piece is more than adequate.
But the colors of cymbals makes a big difference in one's life and it would be nice to have a couple extra crashes and at least one more ride. It's a bit of a pain to do though because I'd have to get a whole 'nuther module/drum-brain thing to plug them into and you don't really get a break buying those pieces à la carte. So I'm not going to do that right away.
However, making sure we don't irk neighbors is a major priority for me and I feel that a little drum platform is in order to reduce mechanical noise conducted through the structure of my floor into the apartment below (or, ostensibly, above). The kick drum pedal is the major culprit in such noise transmission.
Auralex makes stuff called Platfoam which minimize but don't necessarily decouple the drums on the platform from the floor. The purpose of the Auralex product is primarily for acoustic drums, not for just trying to quiet down electronic drums.
SOS has a pretty good article on building an electronic drum platform. MDF and stuff called Regufoam 150 are used. They mention in the article that the Regufoam is expensive but I can't even get a price on it. I may actually own a piece which I got at Canal Rubber. It's only big enough to cover the kick-drum pedal. And I recall there being some sticker shock when I bought it. But I can say that it really does work wonders. (The problem is that I only have that one piece so the drummer's right foot is a bit higher than his left which is generally irksome.)
There's also some stuff called "green glue" which is used. That's pricey but not like the Regufoam. I mean heck, a freaking Regufoam mat the size of the drum rug might be exactly what the doctor ordered.