Before I procede with The Final Versions of these ships, I wish to clarify what Tech Levels I am using. I think this is similar to the standard scheme, though if memory serves me correctly, that runs between -5 & 5.
Tech Level -4 = *2, -3 = *1.68, -2 = *1.41, -1 = *1.19, 0 = *1, +1 = *0.84, +2 = *0.71, +3 = *0.59, +4 = *0.50.
This is not the version that I use in my Home Rules games. I wanted to be able to specify the Tech Level with a single 6 digit number. The numbers 000000 to XXXXXX (yes, that is the Roman Numeral Ten) specify every Space Unit modifier used in constructing the ship (Hull, Engines, Shields, Weapons, Special Equipment, and Fighters).
I modify Hull by dividing it by the Tech Level. I started doing this because I wanted to convert Renegade Legion : Leviathan to Starmada and the ships kept being too large to be played. Doing this gave me enough room in a small enough Hull that I could play a game of two cruisers against a battleship in roughly 5 turns (somewhat long turns due to all the dice rolling, but playing a game still took only about an hour).
This is what I use at home:
Tech Level 0 = *4, 1 = *3.03, 2 = *2.3, 3 = *1.74, 4 = *1.32, 5 = *1, 6 = *.76, 7 = *.57, 8 = *.44, 9 = *.33, X = *.25. This gives me the flexibility to accomodate anything from telekinetically powered stone pyramids in Skyjammer to the great & terrible elder race technologies in Schlock Mercenary Http://www.schlockmercenary.com. I also use slightly looser formulas for Hull (X^(4/3)*100), Engines (X^(5/3)*3), and Shields (X^(2/3)*25). This gives me a little more room to fit things in (except for Flotillas which have more Space Units under the Standard formula). Also, applying Tech Level Modifiers to both Hull and Special Equipment has the curious effect that any System which takes up a percentage of the Hull takes up a constant value in Space Units for a given size of Hull.
As an example, this is what a Hull 6 vessel would look like under my house rules: TL 0: 273 SU, TL 1: 361 SU, TL 2: 475 SU, TL 3: 628 SU, TL 4: 827, TL 5: 1091, TL 6: 1436, TL 7: 1915, TL 8: 2480, TL 9: 3307, TL X: 4364.
An example of what happens when you take a system like Countermeasures and apply these Houserules: TL modifier * 5% *SU of Hull / TL Modifer =
TL 0: 56 SU, TL 1: 58 SU, TL 2: 56 SU, TL 3: 56 SU, TL4: 56 SU, TL 5: 55 SU, TL 6: 55 SU, TL 7: 55 SU, TL 8: 55 SU, TL 9: 55 SU, TL X: 55 SU. The variance is solely due to rounding.