Yea, Gideon looks like he's going towards getting bigger better troops. I can't imagine he's working to try and create a "snoke" or even try to resurrect the emperor. He wants dark jedi type guys, or even to just test out the process on others before he uses it on himself. He seems to be trying to run around the rim and collect as much horrifying crap as he can from all the hidden research facilities, before the republic gets to it.
And yea, those dark troopers are going to ruin someone's day. Those look like phase 2 or even phase 3 bots. and while the dark trooper program is unrelated to force users, if Gideon DID end up with force sensitive troopers he could chuck into the dark trooper armor, that would be a steamroller you'd have to drop a starship on to deal with.
anyone recognize his ship? that one looked almost like a clone wars era cruiser with the forked front and larger rear side engines.