So you're OK with more interesting melee rotations, but don't think that melee need something new? Because a new rotation is a new system. And yeah, in some cases (like Ninja) the rotation would have to barely change to keeps up its level of engagement, but for others (Monk) it'd require the entire job to be overhauled. "Staying in melee" is, and always has been, extremely easy in this game.
Let me put it this way: if they removed positionals, Monk becomes a more simple DPS than Paladin. And no, I'm not factoring in Paladin's defensive duties/options, which absolutely dwarf Monk's. Keep in mind, Paladin isn't exactly the most exciting of DPS jobs and is generally considered pretty basic.
Generally people come to the forums with an axe to grind. If you like how things are, you're not likely going to go to the forum to demand that things don't change, you're probably in the game having fun.