The danger with making a ballistic Crab variant would be that, depending on the hardpoint location(s), it could obsolete one or more of the other 50-tonners.
Say we got a Crab with at least one ballistic in each arm, but retaining at least one torso-mounted energy. Already, we have a problem, because the ENF-5P already fills that niche... but the Crab has a smaller profile and carries its torso energy on a higher mount. While it would be substantially less durable as XL would be pretty much required for a clone of the ENF-5P's dual UAC5 build, IMO it would still have a marked advantage. If it retains more than one energy anywhere on the 'Mech, there'd be no contest at all. If we got a Crab with only one ballistic arm, then it threatens the ENF-4R, for much the same reason- superior torso hardpoint locations, smaller frontal profile, and since with only one big gun it could still run STD, it loses none of its tankiness. Mount the ballistic in a side torso, and now you have the Crab encroaching on Hunchback turf instead. The Crab is currently by far the tankiest 50-tonner, with the smallest cross-section, so give it space for an AC20 in the torso and it instantly renders the HBK ballistic models obsolete. Sticking the B slots in the CT and Head is the only unique option if you want to retain energy hardpoints on the arms, but then the only things you can mount on that variant, ballistics-wise, are MGs and AC2s... which leaves the variant DOA.
You could get around that problem by doing something radical, like making the variant
all ballistic (a niche that no IS medium can currently fill) with the same hardpoint locations as the energy variants have. Let's say 2B LA/RA, 2B CT, 1B HD. That's... weird, but offers
at least one totally unique config (for the sake of discussion let's give the stock config triple AC2s mounted HD, CT, CT, backed up by dual MGs in each arm, XL250, and FF like several of the other Crabs have) and does not
completely overlap the role of any other 'Mech. The downside being that the only really unique configs for it all suck. The upside is that it can still run good ballistics in the arms and suck
less.
The alternative would be to combine ballistics and missiles (currently only the CN9-AH fits there, and as long as the resulting Crab can't AC20 nothing's in danger of becoming obsolete). Do another unique hardpoint layout- say, 2B 1M in each arm and the CT, 1M in the Head. The stock config would carry 1MG and 1LRM10 in each arm, an AC2 and an SRM2 in the CT, and an SRM2 in the Head (just the sort of spazzy loadout you'd expect to see on a TT 'Mech). Again... you can do some pretty unique configs with that (zombie SRMs!) but nothing that's really better than what we already have.
After thinking about it some, I definitely think that weird is the way to go for a Crab hero. They could justify a ballistic or ballistic/missile hybrid as a salvage rebuild custom job. Any further canon variants would require a timeline advancement and new tech- CRB-C (3053) would require C3 to be added, and CRB-30 (3061) needs C3 plus IS ERML and ERSL. There also just isn't that much more you can do with an all-energy loadout that the existing Crabs don't already do. *Edit- Unless they introduced a PGI-made ECM variant and did something
really mean like stick the ECM hardpoint in the CT, so that the player has to choose between jesus box and zombie lasers.
Edited by WrathOfDeadguy, 10 April 2016 - 01:04 AM.