Just imagine if the earlier shared teleports had worked the same way? If "no" meant "not right now, I'll just hold on to the offer for later though" instead of "no, I don't want to use it". Then we'd never have seen threads to request a "wait" option...

So, to go on from that... Why not simply add a third button just like with the TP offers. "Yes", "No" and "Wait". Where "No" declines the friend request completely.