Well Mute, that depends.. I mean.. enough pro's don't care when their 2 win streak gets broken by a loaded race. But it's best to ask, but sometimes the admin didn't notice it.. so yeah.. just a notification would be best, 'Are you sure you want to load this race? Player X has a winstreak.' And then you can ask the player..
yes but that winsteak must be high not 2 or 3 wins
For some people a 3 win streak is much already..