Okay, the Jager DG (looked up last night in MM, could not comment, my net crapped out till Friday) might be the definition of a glass cannon . . . around 50% of armor putting it at good old 3025 levels on a XL machine (which still has CASE in the side torsos when there is no ammo there), explosive guns in the arms that most heavy weapons could go internal on a single hit, and while it has enough ammo (6t) to stay in a long fight the rest of the mech cannot hold up to that (24 rounds of fire!) . . . the single heatsinks are actually fine.
. . . the Jagermech 6-DG is the extremely rare mech that will be improved by swapping the Gauss Rifles out for Light Gauss when it becomes available. You free up 6 tons when swapping weapons, keep the ammo count the same you also free up another 3 tons, and that means you get 9 tons to work with just swapping the main weapons! I mean, how often does a Leaguer really say 'Light Gauss will make that design better.'
Or you can drop the engine to make it 3/5 (I think its a 300 XL?) to squeeze on the paired LB-2Xs with a ton of ammo and a half ton of armor! Bad with style!