important disclaimer: namjoon is a great rapper, leader, and a great songwriter and producer. he deserves all of the love in the world. i personally think yoongi deserves the main rapper position more based on what he has done. with that out of way, let's get to my actual take on this.
i'm usually perfectly contented with positions in kpop. i believe many companies do a pretty good job with assigning positions to their members based on their levels of talents and visuals. but for bts, i'm confused.
from the videos i've watched of suga, i don't see why big hit can't just switch him to main rapper and rm to lead rapper. i understand if maybe big hit doesn't want to hurt rm's feelings, but i feel rm is simply happy that he is in bts... i mean, he is the leader and is already important to the group enough. i don't see why it would hurt if this were to happen.
back to suga, he can rap 8.3 syllables per second, produce great songs, has a great flow, (joon can do a lot of these things too, but i think suga does them at a higher level tbh.) and he's consistent. is that not main rapper material?
you could make strong arguments that namjoon deserves his position, but suga is just on another level to me. and to make a long story short, min yoongi best boy. ~