OK I'm a complete idiot and BLIND AS A BAT. All the statuses are indeed in the Stats Editor. I was reading things wrong(I'm working on a particular skill I think people will like and I needed access to a status I thought wasn't defined in the editor).
Basically if you want to add something new or change something specific you can edit either of the files(xml or the text file). Given that LaughingLeader would able to add a new WeaponType, it's apparent it certainly will lead to appearing in the editor, and you can add new values to Penalty and PrecisionQualitifiers(for example, and I've done the latter) and it will be selectable in the editor.
All got clever crafty changes you wanna do gotta be done outside the editor though, but hey that's what we have to work with for now.
