Using the bits that arrived earlier I've knocked together quick ideas for the hacktivist and the lecturer.
The lecturer torso and legs will stay, but at the moment I'm using a spare Thor head, which will be replaced with a head similar to the one I use on the blogger I made. So still bearded but a different expression on the face, not as fierce.
The hacktivist will change, I'll keep the head (of course) and the legs. But the torso will change, I'll use a hoodie torso when it arrives. The courier bag/satchel will also stay, and I'll add a laptop as an accessor. Not sure about the bandana for the hat, will replace that too. I like the beanie hat I use on the blogger also for the hacktivist. Luckily I think I have another one on the way.
So as you can see it's very easy to create a custom minifig (well if there are the bits available). These are a work in progress, notes, exploring ideas before finalising.