Proxies have Remote Presence for fluff reasons as much as rules, I don't see any reason to take it away.
What rules? They only get Courage from Remote Presence! If at all, since only 2 of them lack NWI, and suddenly the Apsaras has no courage if deployed with the KHD (something that makes little sense... of course it can be explained, everything can be, but it's, at the very least, strange). For fluff surely, but I doubt many new players appreciate having to go look the Remote Presence rules for the Proxies only to be told "they get courage and a lot of bloated text that does not apply, now go look courage".
Um, yeah, they have Remote Presence because they're remotely piloted bodies. Like I said they have it for the fluff. Also could you imagine how much of a mess it would be if they had cubes and one gets Sepsitorised? Does your opponent get the Posthuman order? Do they need to Sepsitorise all the proxies to get the order? If they don't get the order can they still activate the proxies they capture with Orders from their pool?
I never said anything about having a Cube.... there are plenty of troops without one (look at Ariadna! XD). Fluff wise, Achilles should be an unbeatable machine able to take on an Avatar by himself.... while the truth is that it's quite possible he will end sepsitorized. Fluff wise, the Marut houses a very huge and angry Aspect of Aleph, yet it's not inmunne to POSsession like the Avatar is. So... No, I don't agree with your idea that Remote Presence needs to be nested inside of Jumper, while Courage should be (for the Apsaras, Mk4 and Mk3) listed directly in their profile.
Maruts are Remote Presence TAGs just like the PanO ones, they just have an aspect in the comfy pilot chair instead of a normal human.
Lore-wise, Marut is imposing and menacing, but it's size is not really referenced and there's even less info on it being angry? Why would aspect of the AI have any angry emotions at all? It's there to efficiently destroy and look cool doing just that. That's much scarier than some big, emotional robot.
It's already a mess, if you minesweep the netrod containing the posthuman ego (egos now) you get 1 order while the jumper(s) seethe in limbo, minesweeping back nets Aleph multiple orders returned.