Off hand, being a specialist or having a gun that shoots well past 8 inches? And all though it's a little gimiky, explode isn't bad either?
Even without AHD. Liu does 9/20. With the AHD even more yes, but I find the hacking and FO ones the easiest so its nice to have a profile that does the bulk of the rest.
What @natetehaggresar said: Plus a 10 pts. price hike when comparing with the BSG, which is reflected in the other profiles by bringing more cool stuff. I'd be fine calling him a CC specialist, but I'd argue that outside of hard targets with more than 1 wound, he is better off shooting his BSG rather than going into CC. But yeah maybe to refine my point a bit: Goldstein pays a lot of points for an anti-tank CC ability that is situational at best since people don't seem to use TAGs in ITS outside of a few exceptions (I recently attended a 30+ person ITS event with the only TAG being played was an Anaconda by an MFRR player..). Therefore, at least at the moment, I would not be willing to make a 39 or 42 pts. investment while I could get a similar performance as AD BSG by a standard Delta with the added benefit of making him a specialist. I'd be more than happy to change my assessment of Goldstein if the new ITS season promotes heavier TAG use though.
He isn't solely an anti-tank, he also has D-charges, and CC20 B2 AP+EXP Damage 14 attacks will completely anihilate anything short of, well, a TAG, or another CC specialist.
Honestly didn't consider this option, thanks for bringing it up. That certainly weakens my argument a bit, but I'd still stand by "situationally useful, not enough utility to justify the investment (in the current meta)".
Add a Delta Doctor (25pts) and suddenly, as long as you have orders, you have a very powerful "cleaner" in the enemy's backline, with margin for error... The only other people who can do something like this are Haqquislam (using Haquims) and Nomads (using Tomcats), all the rest must make do with Paramedics (Cube Jaegers, Gao Tarsos...), and few have melee-capable DA troops (Diomedes & Ekdromoi being a big exception... 42pts in Vanilla aleph fi you want to risk ressing the Ekdromoi with the -3PH)