Granted... but you are assuming 3 things with this idea:
1. There is no lineage that says that the Testificate race is anything like Steve. For all we know, Steve could have come from some alternate world or something and landed in the strange land of Minecraft (see John Carter for reference)...
2. You're also assuming that Testificates, who already don't have this technology, wouldn't be using it or consuming the same resources as the player. Which begs the question as of why said villagers aren't using said tech, and if so, why is that (or, if the could be allowed to, would they have to be recoded to actually learn how to set down solar panels and such for IC machines).
3. Since items and machines are only limited by resource costs of the materials to put together, how would there be a 'need' to use said Researchers in the game? Would you then restrict what types of recipes you can use, akin to the current Thaumcraft style of gameplay?
I'm not saying it's a bad idea, or that I wouldn't want it in IC, but these are quite a few of the hurtles you'd have to consider. I'd imagine it would work somewhat like Millienare does/did... but that mod alone was extremely CPU intensive...
