You know with all these reflec armor designs appearing LAMs could become very powerful from a meta-game perspective, they might be able to mount/use some of the weapon and ammo combo's that can really hurt reflec designs and use them exo-atmospheric, which would give them a useable in-game niche
LAMs are twice extinct by this time period, and given the statements of TPTB about them, there aren't any plans to bring them back a third time in canon. though since they'd said they were dead for good them brought them back for the Jihad, obviously those statements are subject to change if they come up with a really good story for it. but i doubt it.. if they bring them back again, they'd pretty much have to leave them in the setting going forward, and the TPTB seem to regard them as something best left as occasional historical aberrations from the normal Mech focus.
that said i'd love to see some bleeding-edge LAM's with the republic whenever the Fortress walls come down.. but i don't expect it. :(
and to be honest, you can kill reflec-armor fighters without using LAM's.. you just have to invest in more missile and ballistic weapons that aren't effected by it. though that leaves your fighters with ammo limitations, so it is a definite trade off. the alternative though is to invest in really massive energy weapon bays that can pound the opponent down through sheer damage even if it isn't thresholding. due to the limits on their armor and structure, LAM's are too fragile and slow in fighter mode to go up against modern Aerospace fighters.. and they can't carry much payload either. to be effective at all they have to rely on lightweight energy weapons, and not all that many of them either. so they are fragile, slow, and do weak damage compared to a current tech Aerospace fighter.. not what i'd want to take into a furball.