Oh, since this is resurrected...
Mixed feelings on the Atlas II. Feels like an upgrade that fixes most of the original Atlas' short comings though at the expense of shock value (and that can be restored with the H2 variant), and feels very Star Leagueish to me. Also like the looks, though LB-X represented with a rotary cannon feels weird.
But moving forward to the Jihad, it feels lackluster. I mean, the Steiners were making superb Atlas-S2s and -S3s, especially the latter!, at Hesperus and the Word of Blake figured they'd rather have this?
As a reminder, the AS7-S3 sports a Gauss Rifle, twin PPCs, a LRM-15 with Artemis, a Guardian ECM, and an AMS with 19 tons of armor (and a trio of small lasers), while the AS7-S2 has ER large lasers and a Heavy Gauss Rifle but no AMS. Sure, the price is a Light Fusion Engine, but it is a well protected and focused long-range variant. The Atlas II is not focused nor as well protected.
And then the Steiners went and kept the Atlas II in production instead of reverting to their fine creation -S3? Nor did they reinstate the -H2 variant, or tinker with the Atlas II more. So disappointing.
Incidentally, the Atlas-RS feels like it is a low-tech attempt to ape the Atlas II, though i suppose in real world the Atlas II might be mimicking the -RS...
As for the AS7-D-HT... it is OK. Runs a bit hot, but alternating one ER laser with the LRM-20 works for long-range reasonably. Think i like it more than the baseline Atlas II, or even the -H2 variant (effective if boring). And it can be upgraded perfectly with an UAC/20, 4 tons of ammo, and extra heat sink at the expense of MPLs.