I think there is value to having builds in here for grinding through a mech on the way to eliting a chassis. It's tricky to build a mech with SHS and no Endo, that's for sure! Here's a mech that can contribute in a decent manner as you XP some efficiencies. The key is to try to provide some ranged support while hoping you don't get jumped by, well, anything. If you can stick in the middle of the mob this can provide some decent support firepower. Note, the key to a good SHS build - sinks in the feet! Don't overlook this as you'll be surprised how much you appreciate standing in a pool for increased cooling when you dabble a bit on the dark side.
I don't think that the MG adds much. I like the right arm as a shield arm. Here's my counter-offer, trade it for a DHS and CASE for the Gauss.
Sure, that's fine! I don't like MGs much myself, but I do like the fact that the generate no heat which is helpful in builds like this. The extra SHS will probably contribute more to the mech than a MG would, anyways.