To my mind, it makes perfect sense for Saito not to be a specialist in JSA. Isn't the background as to why he became a mercenary in the first place that he royally screwed up an important protection job, got his client killed, and ran away, thus gaining outlaw status and a death sentence from his own ninja clan? If I were on JSA high command, I certainly wouldn't trust him with the responsibility to do anything other than killing things. At least, that's what my head-cannon says, because, yes, losing an infiltrating specialist with smoke and TO Camo stings a bit. But, we still do have specialist ninjas, which are only slightly worse than Saito, stat-wise (though totally lacking smoke), but they have the added bonus of being able to accomplish actual classified objectives, in addition to mission objectives, and that's a big plus, and they're all cheaper than Saito, at least by a few points. And if you were taking Saito just to kill things (other than AC2 units, because why on earth isn't monofilament Anti-Materiel?), why would you not take an Oniwaban instead, which is better in pretty much every way? So, thematically, not having specialist Saito makes sense to me, but, I've been a RPG nerd for most of my life, and generally, story trumps rules, as far as I'm concerned. We'll just have to harness the fighting spirit of the samurai and find some way around this loss. And Saito and his smoke are still in the faction, so maybe just team him up with a specialist ninja buddy to do the button pushing for him, in some sort of Lone Wolf and Cub type of scenario.