>>96756969
While based in LE2 and the C100 beakies, "Imperial pattern" was added in just before HH2 as an early GC suit. Probably as a nod to Leetu, the proto marine from the Siege of Terra books.
I guess GW probably planned to do a new kit, but in the end they decided to split it into separate nuMkVI, disintegrator sprue, and the new Rapier crew.
>>96757264
Nope. "Imperial" is LE2/C100, and RTB01 is either the old FW resin beakies or the new plastic ones depending on if you see nuBeakies as retconning them.
>>96757317
It's just a wrist mounted volkite serpenta