If it's supposed to not be used for trading, why not simply give it the same cargo limits as a freelancer ID?
Why would a researcher use a 5ker anyway? Those aren't very research-ey ships.
Basically the benefits are being able to dock a Corvo in house space and flying a 5ker as a quasi-freelancer - which you don't want anyway?
And that at the price of reduced rights compared to a normal freelancer.
I really don't understand the point of this. Can't imagine why anyone would go through the trouble of SRP'ing such a thing.
Edit: Essentially everything mentioned here could already be SRP'd as a Spec Ops ID. What's the point of having a different, worse ID that still requires an SRP process?
Side note: "ZOI everywhere"....lolwut? ZOI to do what?