How is "getting a different suit of armour" any different from "getting a different weapon"? I could just as well argue that the previous method didn't make sense, as every Tactical Marine would have to have a Heavy Bolter, Lascannon, Missile Launcher, Plasma Cannon, Grav Cannon etc just lying around in case he's being deployed in his power armour as a Devastator today, instead of a standard Tactical Marine. He'd also have to have a jump pack sitting around in case he's an Assault Marine.
It doesn't make ANY sense, because it requires each Primaris Marine to have 3 different suits of armor available to them at all times. It would make more sense for them to alter their battlefield role by taking different equipment, rather than changing their entire suit of armor. It would be far more efficient that way, and we know how Guilliman likes efficiency.
This is 100% what the fluff says. In case anyone needs a visual...
Gotta agree with sfPanzer here. It doesn't matter that a Reiver is in Phobos armour, if they're designated as a Close Support squad, then they'll work as one of the various Close Support squads.
Intercessors can suit up as infiltrators
Hellblasters can armor up to aggressors, or down to exterminators
And I’m assuming suppesors can suit up to inceptors or down to reivers.
Does it make perfect sense? No, but that’s what GW said. Personally I see reivers as an elite option much like vanguard and sternguard.
Weapons don't need to be specially fitted to the Marine that is using them. A Marine's bolter is his, and is his responsibility to maintain. So are his chainsword or combat blade and bolt pistol. Unless the Marine in question normally serves as a Devastator any heavy weapons he is issued come from the Armory. One of each heavy weapon for every Marine in the Company isn't necessary.
Assuming the Chapter is mostly Codex compliant you would only need about 20 of each heavy weapon. 2 Devastator squads means you'd need 8 of each for them, plus 6 so each Tactical squad can take one, leaving 6 spares on hand.
Armor, however, is sized specifically for the Marine who wears it. Even though they are post human, they still have just as much variation between individuals as normal humans. Which means Brother Bob can't wear Brother Fred's armor because Brother Bob is 3 inches taller.
If each Marine sticks to his battlefield role, it requires a Phobos suit, a Tacticus suit, and a Gravus suit for each Marine. That's 300 suits of armor for 100 Marines, all being stored somewhere on a Strike Cruiser where we can safely assume space is at a premium.
It makes more sense for a given Marine to shift his battlefield role depending on the mission. A Reiver, Infiltrator, and Eliminator are all wearing basically the same armor. Makes more sense to tell Brother Bob he's deploying as an Infiltrator instead of a Reiver today than to keep 3 suits of armor on hand for him at all times.
Furthermore, it makes sense to shift a Marine's battlefield role to others that utilize overlapping skillsets.
If I were a Captain, I'd want to keep my men in roles they've shown a particular aptitude for. Especially if my Chapter doesn't place a lot of emphasis on that skillet. For example, an Iron Hand that is skilled at being stealthy is less common than a stealthy Raven Guard. I would keep the guys that have a knack for being sneaky in roles that have them use that skill.
Edited by Claws and Effect, 09 April 2019 - 04:07 PM.