This is great. I did not expect the total synth approach. Very good. It takes me back to when I used to spend many hours programming tom hits like this with my Oberheim synth. Synthmaster would do this very well indeed.
One thing I was hoping for and maybe he will talk about it in the next part is the concept of multi tracking the same part over and over. You could create say a very cool cinematic tom groove. Use multiple instances of this sound with the synth but fine tune each one though some higher in pitch and others lower. Alter some of the parameters of each one. Copy the groove to all the tracks say 10 or more. Modify the timing on every track and go in and change velocities of all the tracks at random. Then it will sound like 10 or 20 drummers doing the same feel but not quite exactly. Remove the individual reverbs but put a large hall over the whole thing. Drums must be panned everywhere. Delays are not needed in this situation and it will sound more real without them. Unless delay times can be modulated slightly.
I have done this live playing my tom toms live from my kit. The snare can be used with the wires off. Play the same groove on all the drums one by one. Use mallets on the kick drum. Then tune all the drums differently and do that all again. Now you have 10 cinematic toms playing the same groove. Another tuning gives 15. Mixing up different makes of drums also adds to this. eg a Yamaha 16" floor tom sounds different to a Sonor 16" floor tom. I found only hearing the metronme while doing each overdub results in a slightly tighter sound. Still a very wide beat though.
This sounds serious. You could do a bunch of synth tracks with added live tom overdubs on top. 30 to 40 players now. Big is understatement. It is important for every part to be the same say as written but all timed feel wise slightly differently. What makes those cinematic drum libraries and plug-ins sound good is lots of players live in big rooms.
Native Instruments Action Strikes is also killer at this.