Here, there and everywhere. My drums usually comprise 30-40 tracks
Are you a magician? and if not can I get a rough explanation? I would be infinitely greatful. 
Yeah of course. So let's this track I'm about to track vocals for
What takes a lot of time for me on drums is the number of kits I have to design for any given song. I always have at least two-one really punchy acoustic and one full electronic kit.
First, I sequence all my drums in Battery on the acoustic kit to get the idea down. Then I split Battery into several channels to have more control over every sound individually. That'll usually be my first 10-15 tracks or so. After everything's split I'll always reinforce the acoustic drums with some electronic ones to fill it out a bit and give em dat pop sparkle (with additional harmonic excitement of course). Then I'll split off a couple extra channels to have control of overhead mics. It's admittedly kind of an old school approach. Usually this take me to 20-25 tracks.
Then I make my electronic kit like most others. Just sample hunting and finding what works. I have a lot of little percussive sounds and accidental shit that I pepper around. I come from 10 years of live drumming so it's a very obsessive approach for me. For example, the rim clicks that come in at 0:45 are 4-5 channels of rim samples that are all subtly messed with. There's just a lot of stuff like that throughout. The claps during the chorus are the same kind of situation. Honestly, this song was probably closer to the 50-60 track range for drums. Once you start chasing a believable acoustic drum sound with samples you have to pay really close attention to everything. You either get it right, or terribly, terribly wrong.
tldr; acoustic drums design with one shots is really time consuming to pull off convincingly and will bloat your project.
edit: also not to sound high and mighty, but if anyone actually wants a serious in depth explanation I'd be happy to talk one-on-one or like on a skype call or whatever