Strangely they're also really good refits for any 3025 'Mechs that carry an AC/10. The Enforcer and Hatchetman are two that spring to mind immediately. Basically the same range and damage, plus some bonus damage. The only thing they don't match the AC/10 for is heat, but with the tonnage saved it's easy enough to add additional heat sinks.
On the Enforcer in particular, an extra bonus is you can pack two tons of ammo instead of one.
I haven't done this (I have done it to the Enforcer and Hatchetman), but they could be good refits for 3025 Hunchbacks as well. I could see replacing the AC/20 with twin plasma rifles. Better range and ammo capability, and you can add more heat sinks to compensate for greater heat.