On a TD-11 you can have up to 7 cymbals if you use the extra cymbal input and split the 3 tom zones and you still have a cable for a 3rd zone for a ride if you own one. I don't have a 3 zone ride, but I do have 7 cymbals because who uses the secondary zone on the toms for anything other than cymbals? IIt sounds hard to believe but giving up the default "ride edge" sound on a couple of your preset kits shouldn't really hold you back. The individual sounds on a V-Kit are so clean that you can do alot with a little.
And even if you trade the ride edge sound for something different, there is still a 'ride slap' sound available if you play up high on the bow near the bell. I use the slap sound way more than the edge anyway, which I usually only need for jazz stuff.
On the TD-11 and the TD-15 (and some other Roland modules) you can split tom zones (head and rim) of course the head is used by the tom but if the rim zone is split in the module, and connecting a DIY splitter to the cable coming from the cable snake to that tom cable, then one of the splitter ends goes to the tom pad, the second goes to a cymbal or other percussion pad you want to add. In my case my TD-11 came with a mesh head snare, mesh head bass drum, 3 rubber toms , a fixed hh with a separate pedal, and a 2 zone crash and a 2 zone ride cymbal. the TD-11 has an extra input for another pad either cymbal or tom but all the included outputs for the 3 included toms are 2 zones (the mesh head toms in the higher end model ARE 2 zone, the rubber toms are not) so since I had a second zone on 3 toms that was not being used, I made my own splitters following V-drum tips tutorial in YouTube. This resulted in :All sorted now with the CY-15R. Took the original 13R wires from main TD15 loom for the new 15R and then just used the Crash 2 input for the 13R to use 13R as a second crash so sorted. I've also since bought another PDX-100 to use as a fourth tom tom as third tom tom was a PDX-100 so I'm a four tom tom kit guy now. Look out Phil Collins here I come - joke!