As Arkansas Warrior said, it's made with parts that are in good supply. Subsequent runs were sold ... so, the Lyrans probably kept one production run, and sent the rest out ..... you all want a Battlefield unit, but are not thinking a different way .... trainer. You use this to train pilots for designs like the Hatchetman, Axeman, or Berzerker ..... they get some time in a mech with jump jets, that doesn't cost much, if they bang it up, and that doesn't cost money in ammo, for training. You just had a period of military draw down, and now you need to rearm, along with getting pilots up to speed.
On a side note, they can sell them to OTHER factions that also drank the Stone Kool-Aid and need something to put in formations.... at least, something other than an industrial designs.
As for building new Wolfhounds ... yes, do that, for your own forces .... but building older Wolfhounds isn't going to work, for the same reason that putting M48 Tanks back in production, now, would probably not be a good idea .... it's old tech, despite having an effective canon, still. Everyone KNOWS it's obsolete...... and no matter how much you tell them that it's new, with this or that ......they are seeing an old rusted hulk with fresh paint. Standard Large Laser... yeah, that's some grandfather's garage dweller, we all KNOW that Wolfhounds are sporting Heavy PPC's......
With this design, the Lyrans get a trainer, with options..... they can train pilots, and if desperate, field them...... at least until production is back up to useful levels, and you can start filling formations with better machines ........
The Invasion of France saw the Germans using Panzer 1's and 2's, because there weren't enough better tanks available..... and again, those were training machines ........
After decades of limited production, and draw downs of military assets, you need both machines, and trained bodies to operate them, and this allows them to start on the latter, while they play catch up with the former.
Nahuris