So, after the Marauder (assuming it's a successful sale, and I don't see why it wouldn't be) is the Warhammer. Any guesses for the order of release for the remaining unseen after that?
Personally I think they can manage to perhaps sell the Crusader and the Marauder II as single mech packs as well, but the MAD II will probably be some time off since the original MAD is already here. The rest... Not so sure they're as easy to sell single as those already mentioned, but let's assume they stick with the single mech sales So here's my guess.
1) Archer: Piloted by Jaime Wolf and Morgan Kell, both big names in the lore and one of the most well known unseen next to the Warhammer and Marauder. The original missile boat.
2) Phoenix Hawk: Reasonably fast 45 tonner with excellent jump capability. All hardpoints in the arms. The stock PXH-1 comes with a Large Laser, Medium Laser and MG in the right arm and a Medium Laser and MG in the left arm. Known in lore to have a particularly excellent comms package, and therefore often serves as a recon lance command mech. Will probably have info warfare buff quirks because of this.
3) Stinger and/or Wasp. The humanoid bugs. Almost identical 20-tonners apart from the Stinger having a Medium Laser and MGs while the Wasp has a Medium laser and an SRM rack. Would make sense to release these two together since they're so much alike as to be almost interchangeable.
Okay, all of those are well known. Time to cool the excitement down a bit so people have time to build up hype again, so some less popular/well known unseen next.
4) Longbow: Bigger and with more missiles than the Archer, but less popular nevertheless. Assault missileboat.
5) The Ostman Industries pack. Ostwar, Ostroc, Ostsol and Ostscout. Why a pack? Because nobody ever asked for an Ostmech.
They're not gonna sell well solo, but a reasonably priced pack might do okay.
6) Valkyrie. The less known and less popular member of the "Veritech family" (Crusader, Phoenix Hawk, Valkyrie, Stinger and Wasp). Mostly a Davion mech, and since nobody likes FedRats the Valkyrie has languished in relative obscurity.
Light and relatively mobile mech sporting LRMs and a medium laser.
Hypetime again, everyone!
7) Crusader! A bruiser of a mech with heavy armor for its tonnage and plenty of firepower. 2 LRM-15, 2 SRM 6, 2 Medium Laser, 2 Machine Guns. Along with the Thunderbolt this was one of the original heavies who could easily go toe to toe with bigger opponents because it often sported significantly more armor (more than both the 10 and 15 ton heavier Warhammer and Marauder)
8) Rifleman: The ancestor of the Jagermech. The original Dakkamech with paperthin armor and a severe lack of heatsinks. People still love it though. Known for excellent Anti-Air tracking and targeting system. Might get some targeting buffs for quirks due to this.
This order has, of course, been pulled from my between my buttcheeks with no other justification than "Yeah, that sounds like it could work".