to make it clearer, you would only be able to switch on top of your own flag point. Not next to it and not at the opponentās flag, but directly on your own. I think this limitation greatly removes the OP of the in game switch.
like u choose a weapon, lets say Defender, then u can only use Defender, Supurt and Sharpshooter, but no Scout, Assault. Only problem is that I cant say to what Runner is a part of. For the rest of it, its defently an upvote, would open many new tactics!