[>BKA< T Wrecks]

Bots can register lower danger already... it's included in the pathfinder they use. Whenever a bot dies at waypoint x, that waypoint is weightened with a certain danger factor, and the higher the danger factor, the less attractive for navigation it is... so, let's say you play de_dust as CT and kill lots of enemy bots at that tunnel entrance - as a result, the bots will try an alternative way instead of blindly rushing through the same corridor all the time. The new pathfinder is what makes the bots use the entire map, unlike PB 2.5 bots, which always used the same passages and tended to be very predictable.
So basically I think it ought to be possible to enable bots to behave like you said when reloading, but without losing waypoint compatibility.