In-Universe though I imagine they'd be tested not in singletons but in groups; they seem like the kind of vehicle where having a single one is just asking for it to break down or be wiped out before it can show its quality. Of course, with the Soarece, it's likely that having 12 means you have 10 breakdowns... but that's 2 that get tested, right? (I jest). I suppose I don't see a single example out and about by itself.
The reason I would like to fit the company onto a single DropShip is if the entire regiment is redeploying (say, from Sheridan to Nestor), I would suspect they'd've spent the money to purchase/convert the bays on a SINGLE ship, not on like, three or four. This would also concentrate the Techs required (Fuel Cell engines are uncommon in the military in the Succession War) and would put a place for any of experts in the design (such as project managers) to see to the whole 'herd'. It also means a single enemy space-shot can relieve the poor Fusiliers of the burden of these huge tanks (but I just love them so much)! Bahaha.
That said, I could see 3 Gazelles with a lance per Gazelle, but that sounds egregious... though switching the existing bays for Superheavy Vehicle Bays is a Class B refit so could probably be done more easily than I'm letting on...
Honestly, like I mentioned above, if your RPG has a total of 12, then I don't see a need to deploy more than 4 as part of my "1st 5 Minutes on the ground" combat force.
When I'm creating the DS Fleet for a FC RCT for example, I'm shooting for maybe 7 companies out of the 9-12 that the regiment fields in terms of total total mechs, to have the option to drop from orbit via Mech cubicles. (5 will do in a pinch)
Maybe another 12 mechs via an Excalibur that IIRC is fluffed as having mech bays but not the ability to drop them as fast deploy when landing.
But the last battalion+ or so are getting brought in via a Mule (or 2) once the LZ is secure.
The tank brigade will be lucky to land 4 of its 10 battalions as a "first wave" force.
Ditto the infantry with at most 2 regiments of dedicated DS.
About the only combat arm that I don't have much stored in "Cargo" for is the ASF wings since you have dedicated CVs, the Mech Movers, & a lack of large ASF formations.
Though, if you were bringing in a "Ground Support" wing of Conventional Fighters I would see those as being on Cargo DS.
Anyway back to the super tank, If you have to have them on a single DS then I'd suggest using a Triumph that removes 2 Companies of Heavy Bays for 1 Company of Super-Heavy bays.
But frankly, a Gazelle allowing fast deploy of 1 Lance w/ the rest in cargo is what I would use.
A lot of folks suggest going for big Dropships to save on total collars & # of JS.
The reality of the IS is that very few units actually HAVE their own dedicated JS.
Far more often they will have "some" DS & then when it's time to deploy the Naval Fleet will assign them a temporary taskforce of JS of all sizes & some extra fighters & maybe an Assault DS or 2 & it is that taskforce that will do the KF Jump for them & then be sent back to Fleet Com when the mission is over.
The issue isn't having a shortage of JS for any single Regiment to use, the issue is mobilizing an entire border at the same time, which is why you see houses end up dragooning Civilian JS into use for a while & then you see fluff about "economic crash" in the Post-4SW FedSuns or the Post-39 DraconisCombine.
If the houses actually tried to give each regiment its own JS compliment they would all be left with less than a full compliment & ability to only move half their force (or less).
There would be no command circuits or free floating fleets+wings to mobilize.