(If someone has already done this, I will happily accept a link. Google only turned up ship models taken from the Mass Effect series, which are awesome in their own rights, but not what I'm looking for...)
What I'd like to have... and maybe make myself if necessary, is a part in the game that functions as a Mass Effect core from the sci fi series of the same name.
For those who don't know (BLASPHEMY! jk), a Mass Effect core has physics bending properties. Applying electricity to a 'magical' new Element, Element Zero (or Eezo), will change the effective newtonian Mass of everything within. This has multiple applications within the game's lore, from enabling incredibly high yield weaponry (reduce projectile mass to near zero, apply acceleration to a fraction of c, revert to normal mass) to faster than light space travel (... how exactly this goes around general and special relativity is never explained. But hey, it's sci fi.)
My thought was to make a 'reactor' of sorts that eats a lot of EC (upwards of 1000EC/s) to reduce the effective mass of the ship it is attached to by a significant margin (up to 90%)
If this is not possible in engine, maybe the reactor itself could change it's mass to a negative value to offset the other attached parts mass?
If this also doesn't work as intended, maybe the reactor could adjust the local gravity parameters according to EC consumed?
If that is not possible either, maybe it could temporarily boost the torque strength of reaction wheels and increase the ISP of all attached engines and RCS ports?
... or any other way to achieve similar (mass) effects.
If I do end up having to create this myself (yay for learning new skills!), I may actually make this depend on discovering, and mining Element Zero. Say... on Moho or Dres, like in the Mass Effect games. And maybe I'll add a little something on Duna as a nod to the protheans, too.