I’m going to direct you to other threads on this so that we don’t take this one off subject:
#1 , yes you can do it in a DAW, I have in the past. I talk about it here
Note that the link goes to an Octatrack topic, and OT uses 128 slices instead of the 120 that MS/DT/AR use.
#2 yea, you have the general ideal. If 120 “hits” in a chain, set length to 1 and then scroll the start parameter. If 60 “hits” in a chain, set length to 2, and then each hit will start on every other integer of the start parameter. If 30 “hits” in a chain, set length to 4, and then each hit will start on every 4th integer of the start parameter.
#3 as far as ensuring equal spacing, see the link in #1, or you can also use Octachainer if you don’t wish to use a DAW. Just be sure to use the 120/Rytm slice settings.