Thinking a little more on this, my original reply had been based mostly on the treecats being moved to colonize what amounts to a virgin planet, no other human presence at all.
Ideally, they'd be moving the treecat extra-Sphinx colonies into other systems that already have human presence, and just create a "similar to Sphinx" judicial law insert to protect the treecats.
Haven itself may not be a pick, because I think it's described as almost a Coruscant type planet, with little to no wilderness and primarily city. I infer that from a line somewhere that Haven has to import food from other planets in the Republic, just to feed its population. Which implies little to no cropland on the planet because it's almost totally covered by government needs, and the general population.
Grayson's a top pick, it's already heavily defended, a long time tight ally of Manticore, and they already practically worship treecats because of Honor. So they'd increase the colony size there pretty fast.
Andermani empire would also get some treecats relatively quickly going to New Potsdam.
Bolthole, almost without saying. Being a shipyard, they could easily whip up a few artificial habitats specifically for the treecats, which gives them plenty to explore without losing their arboreal needs.
Mostly any place that there's a heavy need for the cats, mostly for their ability to detect the nano-adjusted assassins, but where the new colony would already have medium to very heavy system defences already in place. So you're really just looking at the following questions:
-what size a ship do you need to transport a colony to said existing solar system with sufficient defences and a political need for furry assassin detectors
-size of escort for said transport
4 MT transport would be more than sufficient to carry an entire treecat clan, plus an absurd amount of foodstuffs (meaning celery)
-possibly use one of the older JNMCT transports with their faster hyper generator, better particle screens, etc and Eta band capability.
In keeping with the increased speed, minimum escort would be at least a full squadron of heavy cruisers, possibly two. And again, Sarnow Deployment, because with a cargo of treecats, you're more concerned about making sure absolutely NOTHING gets into weapons range of the transport.
Battlecruiser's would be more ideal for this escort, but heavy cruisers are both more numerous, and more likely to have two or maybe even three full squadrons shaken loose for escort than even a single squadron of BC's. Keeping in mind, this sort of operation might be happening at the same time as the SLN is conducting it's "piracy" operations, and Battlecruisers being both ideal commerce raider (and protectors), while Heavy Cruisers are the hands of the Fleet, this sort of escort role belongs to the Heavy Cruisers.
Superdreadnoughts and CLAC's are almost totally unsuited for this form of escort operation. If combat were to happen, it's more likely to occur in hyper where the LACs can't be used, and the podnought's also fighting at a disadvantage.
