I'd argue that your average communist is moral and trustworthy right up until the moment they get any power, then they are just corrupt(able) politicians, ready and able to fuck over group A to benefit group B, who they happen to favor more this week (decisions must be made, after all!). No system is perfect, and definitely no individual.
Big picture view: The scales will tip every now and then, but it's ultimately survival of the fittest system that wins, with none existing in isolation - there are always external forces at play.
With that in mind, I'd put my money on more limited socialist-style-carve-outs like single payer healthcare in the US, more rent controls and housing subsidies, slightly better employee protections. Just enough to placate the masses, while the ruling class mostly continues as before. Even this will require a massive effort. Post-republicans, of course.
Challenge accepted.