Hmm... Looks like I'll have to clear the air a bit...
I admit that initially the whole point of this submod was to add a few cool units into the Seleucid troop arsenal, but as the mod grew from my first version of the Agema to the collection of units you see, my philosophy for this sub-mod changed, it's still about adding units for fun and variety but within some measure of historical accuracy and cultural compatibility. It's actually been a while since I realized that Spartans and even the Pergamum Hoplitai serving the Seleucids is actually a stretch but I kept them because by then it was already a long time feature of the mod.
As for making the Praetorians available... well, I honestly am not attracted by the idea. Especially considering I'm planning another mass unit skin overhaul to my own units, introducing new African and Indian units and finally getting the AOR set-up working the way I want to work. Not to mention I'm behind in my duties with Fortuna Orbis because I'm not exactly having much free time lately.
Though it's not that hard to mod them in yourself, I'll post the details later. Please be patient.