[DirectorTsaarx]

The only problem with providing ruins techs that expand on racial techs is that races without that racial trait would probably get no benefit from the ruin, either because they don't have the racial trait or because the components are not specified in the build files.

Of course, if you intend that the new ruins will provide two sets of components, one for races WITHOUT the appropriate racial tech and one for races WITH the appropriate racial tech, then it might just work.

As for items that should be considered, I can provide some ideas under Temporal tech (in order of preference):

Temporal Space Yard Component
Faster/cheaper Temporal Space Yard facility
Temporal cloaking device
New Version of the Temporal weapon that does 4x damage to shields/normal damage to internals (as above: a low-level Version that non-Temporal races can & will use, and an improved Version for Temporal races; improvements would be better damage or more range, as you prefer)
New Version of Tachyon Cannon (again, low-level Version for non-Temporal races or improved Version for Temporal races)