I'm down for multiple MCs, but only if they have completely different personalities and the game reacts accordingly =))
Also, having one MC dedicated to one LI like 'Him, the Smile and Bloom' makes it feel like a real romance story, which I love because it feels like fate =))))) Plus, just the thought of the couple I've completed making a cameo in another route gets me so excited!
Another bonus is that with more MCs, there's a better chance I'll find one I can really connect with, and I can just switch back and forth if the current MC starts getting on my nerves =)) Also, I'm a huge fan of scenes where the girls lift each other up or complain about the LIs, so it'd be great if the MCs could do that.