Balors hammer has its drawbacks of course, but if you build around, it can became be the best hammer.
The earliest you can use it is with natives cocaine, If you stash enought of them (+4 str), underpie (+2) and using regalia for extra +1. Using it with 19 or 18 str can be possible, with reduced precision, not specially recommended but usable if target was previously disabled (i.e in a bear trap). Late game just with adrenaline you are fine.
Missing electroshock is bad for swarms, but of course you can bring a secondary hammer (or even spear + sweep, depending on build) for that. Single target damage is not affected, since add-on damage does not get multiplied by skill lvl (or other additive bonuses) and with that much STR and Balors basic damage, it is absurd. It is like critting every hit but without rng.
With that amount of STR I don't consider it's weight a hard problem, in fact, since you won't be using metal armor (psi caparace vest) it compensates total weight.
Cripple can be a problem, of course, but the idea is to not let that kind of enemy hit, opposite to juggger build. You have the psi and mobility for that, and if ends up happening, switch to secondary weapon.
And the most important thing, with corporeal projection you get strong ranged attacks. Proxy punch, implosion, and even elektrokinesis can be put to good use with this build, couple that with the typical granade and you change combat mode from melee destroyer to ranged killer.
Overall, I think it was quite fun and probably strongest hammer (and probably pseudo melee) build. With recent changes (crit nerfs) it got "buffed" in comparison, multi psi changes can be damaging to the concept but the build can adapt most likely (giving up themo D, Wich was in my initial version for AOE dame).
If you are interested I can post adapted version, for sure.