Would Imperium actively hunt down inventors on feudal worlds ?

Yes.

The Imperium doesn't oppress technology because they hate it and are allergic to improvements. They oppress technology because the warp is constantly waiting and it will use every opportunity to screw things up. It's entirely possible to accidentally create something that happens to have just the right layout of lines and angles to conduct warp energy and make the whole thing unstable and/or inherently corrupting (this happened on a large scale with one of the grand cruisers in the navy - their crews all invariably turned traitor from warp influence and the design is now wholly found within heretic fleets).

The STC templates have a record full of designs that verifiably don't do this, so they're the gold standard. The Mechanicus does undertake research and development, but it's a painstaking process because what does and doesn't invite warp corruption doesn't really follow logical laws, so most of it is trial and error - and when you're designing guns the size of houses, you want to err on the size of caution.

In your example, the Imperium would absolutely kill Da Vinci and burn his airship, because there's every possibility that its construction is - unbeknownst to him - inviting demons in and it'll fuck up whole areas of the planet. They could check with specialised equipment and psykers, but they're rare and not actually that reliable and won't catch every possible scenario, so it's easier to have a blanket-ban enforced and mandate that only the AdMech get to tinker with technology. And even within the AdMech, what kinds of tinkering you're allowed to do is strictly controlled within their hierarchy.

>>47056530
No. If you are asking for tech heresy, no it does not work like that.

>>47056661
>This meme again

The AdMech just hoards technology because they don't want to share it, and use "muh demons" as an excuse as to why only the STC templates are widespread.

>>47056661
Pretty sure this is just fanfiction, dude.

>>47056661
Admech has more trouble that caring about cavemen banging rocks. A planet needs a "Imperial level" of technology before it pings on their radar and they start giving a shit about what do you try to invent. Protip: STC were designed by super AIs, thinking at that level is beyond your average human reach.

>>47056679
>>47056715
Mutilators fluff indicates that he is right.

>>47056772
Mutilators come about because of a virus, the same virus that creates the Obliterators. The only difference is that Mutilators focus on melee weapons instead of guns.

>>47056772
No.

>>47056661
Pretty sure the Ad Mech knows what a steam engine and zeppelin is, so it's not like 'Da Vinci' is even creating new heretical technologies, just helping the planet advance to a more modern tech level.

They might send a tech-priest down there to keep an eye on him, but unless he starts doing some really crazy shit, they'd probably happily leave him to it.

>>47057348
Hell, they might even *help*, since a planet with even a minimal technological base can still make shit like simple spare parts or ammunition.

>>47056661
So nice to see someone talking about the AdMech without using the "All Tech Priests just shove their dicks in toasters all day." meme.

>>47057487

> Implying Admech penises arent six-slot toasters
> "Come hither guardsmen, and sup upon the bounty of carbonized bread!"

File: 1394860807295.jpg (64KB, 400x400px) Image search: [Google]

64KB, 400x400px

>>47057487
Ey, man, don't judge. If a guy wants to use his MIU to make toast, let him use his MIU to make toast. We can't all be bothered to press buttons and guess when it's done.

Like thw Roman Empire finding out an unattended Nuclear Reactor.

The Imperium wouldn't suppress basic technological growth on a Feudal world. The Planetary Governor, however, would. They likely have full access to Imperial technology and conveniences, and keeping the populace in a primitive state would make them a lot easier to oppress and control.