CTech Mecha via GURPS Spaceships

Well, I've had CthulhuTech for about a week now and I've been fiddling with GURPS 4e stuff to convert over.

In the interest of not infringing on any copyrights, I'm not going to go into deep detail on my conversion, but I can at least give my basic observations to help any readers that might be interested in running CTech in GURPS.

• CTech seems to be largely Tech Level 10 in GURPS terms, with some things only at Tech Level 9. Arcanotech provides superscience energy generation and gravity manipulation.
• Mecha can be built with some effort using GURPS Spaceships 1, 4, and 7. I picked up Spaceships 3, too, but it doesn't have much use for this unless you're planning on doing actual space battles.
  
• Remember that the Spaceships Size Modifier is mass-based; a mech is probably going to be about half as tall as the Spaceships Size Modifier suggests. That puts the NEG's main battle mech (the Broadsword) at SM+5 in mass (and thus, spaceship design) terms, but SM+4 in height (and combat) terms.
  
• You may need to tweak the stats on Spaceships missiles and the Robot Legs component to get the proper genre emulation.
• You'll need to work out how you want to handle normal GURPS combat time versus the Spaceships combat time. There are a variety of threads on the official GURPS forums about this. It seems to work best to give full (twenty-second) rate of fire per twenty seconds, letting the user divide the shots however he wishes, rather than trying to convert to a per-second rate of fire, which results in some oddities when applying the Aiming rules.
• If you have an old version of GURPS Spaceships, make sure you check the errata on ballistic weapon damage, or you'll have the smallest gun shells punching huge gaping death-holes in your sixty-foot mechs.
• For oversized melee weapons like hyperedge blades, I suggest using the GURPS Supers rules for huge improvised weapons to get something roughly similar, convert to the appropriate damage type, and apply templates like Superfine Blade (from GURPS Ultra-Tech).
  
• Alternately, check out the house rules of 'Reverend Pee Kitty' for Heavier Weapons for Stronger Characters. I think the physics are a bit weird there, but the end result is still a very usable system that lets you scale up human-size weapons for the mechs.
  

Anyway, just my thoughts. I haven't got to the point of testing this out yet, just been building, converting, and doing thought experiments.

On a side-note, GURPS Spaceships is ridiculously fun. Just designing the ships has this sort of crazy abstract RPG space legos feel. I mean, the example ships in the supplements include thinly-veiled ripoffs of TIE Fighters, the Enterprise, and even a TARDIS. And they all work.