Thanks for the comments, . . . A few replies:
Llamahead - My plan for Remora Drones is basically the same as the current Crisis Drones but with some flight surfaces (wings). The support hulls are the base part of the old GW Eldar Fire Prisim, Night Spinner and Fire Storm models.
Lead-Space - The first few bases were some tests where I tried to extend me previously limited range of ideas. Yes I have definitely decided no more green static grass. Tufts, Dark and Light green 'bushes' and some fine green ground cover.
Otherwise things have continued to move forward with arming the Tau Colony. In the end I decided that old Eldar support vehicle jet engines were too small and too round for a decent Tau proxy. So they got cut off and replaced by some more blocky versions crafted from styrene rod. And some extra surface detail got added to make them rather more symmetrical.

I’d always intended to paint the vehicles with a camouflage pattern. And this is what transpired. They probably need some extra shading and so forth but they are fairly striking at arm’s length; ie out on the table.

And a rear view in a slightly warmer light

Some slight variation with the weapons load-out give some creditable Drone Harbingers; to go with the more Drone heavy
Tau Colony List I am working on. They could easily substitute as Devilfish on a more conventional list.

Some work in progress with a Hammerhead tank, armed with Rail Guns. This first version includes magnets to allow swapping the turrets (and pointing the guns during a game) but I am having problems keeping the magnets glued in place; they are very impressively powerful magnets. Could not quite bring myself to produce an offset main armament but might try that with a drone controller dome to see how it looks next time. Also a Skyray.

A fair surplus of Eldar Heavy Support Weapons grav-platforms suggested them as the basis for the Piranha and Tetra light recon vehicles. Again some blocky engine mountings gave them a more Tau-like look; although I’ll happily acknowledge that they remain moderately far from a direct lookalike to the FW vehicles. They were significantly cheaper to acquire/construct.

Actually looking at them again I think I’ll try and put the gun drone in a lower position. Maybe even just have a drone flying with the vehicle. Could also replace it with a drone controller disk in a lower profile position.
The Tetra is similar but with a Viper Gunner on the back and no attached guided missiles.
