Thank you for that feedback. As I'm still just a fanboi and haven't played much/lack the chances to play much, I'm not sure what T1 SR boost and stuff like that means. My last game of E:A was about 15 years ago it seems.
As for RR (rough riders, right?), I do think fluff supports it and I see it as a very thematic fit for Desert Raiders--especially mounted on their mukaali (and I just painted up a platoon of Tallarn RR a couple of days ago to use in a possible Desert Raider list, darn it!
). As it fits now in the two latest lists, they're as sneaky as any Tauros or Conqueror squadron but be able to avoid a massed MW barrage a bit better as they'd be scouts and spread out (that's how scout works, right?). But I do see your point about having so many options.
Orbital support is available to all IG regiments, right? I'll have to go look at that. I can do without it, but does that leave the list lacking in punch?
But how about having RR as an upgrade to a core formation then (not a sentinel company, though)? Outriders skirmishing ahead of the main force of troops? True scouts in the sense?
What if this happened:
0-1 Conquerors x6 as a support formation? That way, a bit of RA can be used if needed, is fast enough to keep in the speed/raider theme, but is limited so it can't be spammed.