Not sure why the Reds catching situation is a problem for some. Mesoraco is young with a high ceiling and trying to break in. Until he does, Hanigan is one of the best defensive catchers in the game who gets a lot out of the staff. I don't see a need to change the situation until Mesoraco siezes the job. Hanigan has already shown on multiple occassions that he suffers a drop off on both offense and defense if he plays too much (reference previous years when Ramon was hurting or playing 1B when Votto was out for an extended period after his father's death). OTOH, there isn't really a reason to hand Mes the job until he takes it. Some guys take a while to become the player they eventually do. Tony Perez wasn't a regular for his first couple of years. Eric Davis took a while to take over full time. Barry Larkin had an OPS+ of 76 as a 23 year old.
Hanigan can't play 140 games per year and Mesoraco gets plenty of playing time to take the job as his tandem partner. The situation is nearly perfect given who these guys are and where they are on their career paths. Mesoraco just needs to step up.