Pick how you move, then change your mind

How you move is a setting now instead of a fact. There is walking, there is strafing so you can keep your eyes on the tower while you sidestep away from it, and there is flying, because someone was always going to ask.

You can switch while carrying something. Turn flying off in mid air with a block in your arms and you both arrive at the same time, and nobody stops you. Everyone at the tower can be on different rules at once, so one player is placing a block with great care while another descends onto it like weather.