If somebody's done the math on this to verify, please share, but the single, single, double, triple to 300 format truly works only if it is mathematically possible to win in a sweep of the first three rounds. Otherwise, as in the case in the current version (now, anyway), the total points up for grabs never amounts to 300 over the first three rounds, and thus the first round has no bearing on the outcome of the game, meaning it's useless. If it's useless to the game, why is it there?
The answer, as far as the current powers are concerned, is to play the question with the most innuendos for laughs, YouTube moments and nothing else. If only Family Feud was still a family show...