I play in venues on everything from old 900s to nexus2s to the standard 2000s / nexus and even a xd-rx for portable stuff.
I use A, B, C as into, breakdown, outro with B also optionally being a jump point to say final chorus or a vocal starting point. Then all the other hotcues are the extra non essential cues if I'm in a venue with nice new gear. I then double everything up with the memory function so if you are on older gear you can at least instant double it over to the other deck and then use the memory points to jump to where you need. It's a bit more fiddly but at least it means you can have some consistency in workflow during this transitional period.
That's how I work it anywho :-)