I keep rhino in my squad as a surprise for mid game. He does best on underground and in the right hands he can deal serious damage, such as providing flanking crossfire during aggressive pushes. His unsung ability is to ‘tenderize’ groups even at distance so your teammates can have an easier time with the enemy. These are the hard to master aspects of an easy to use ability.
But frankly, he is too reliant on select medics (aura) to keep alive. All that health doesn’t mean much against accurate head shots and large hit box, so if healing isn’t around, this guy is in a corner waiting to self heal. Personally, I think his minigun is tweaked just fine (controlled bursting is key) but other aspects are really cramping his style.
Some avenues to explore without touching his health or hit box are already implemented elsewhere. For instance, given his large size( thus health) all that armor should count for something… Perhaps he needs an adjusted armor ability similar to phantoms, providing that tank like feel. Or he could pay tribute to Tf2 heavy and carry a reduced number of mini health packs (nom nom) with a slower recharge rate. Thinking on it, these both would blend well with the looter ability by offering a more independent play style not presently available.
Regardless the approach, it will be a small approach like this which will see him more applicable on maps without becoming unbalanced.