Use for Regirock?
How does it compare to the Top 3 rock attackers? (Omastar, Golem, Tyranitar) Does pure rock typing offer any advantages?
Answers
Agree. It would be a wonderful gym defender with that high defense, if you were allowed to put it in a gym. Now, if they change that rule, or allow the trainer who takes down the gym to put a legendary in the last spot in the gym, and others fill in slots 1-5, then it would have some value.
On the attack, maybe a gym sweeper, but double rock Ttar does it better, with good attack, if a bit less bulk.
Sadly, the Regis have their main selling point (being bulky as Hell) almost completely negated by being locked out of gyms. If Niantic changed this rule, all 3 of them (even Registeel, to a lesser extent) would make for solid defenders.
In a raid-based meta where DPS is king, the Regis have a tough time finding a place. Personally, I think the main appeal for Regirock and Regice is as potion-efficient gym attackers. Registeel needs a buff though, otherwise it is just a worse Steelix.