General chess principles that are not true in blitz

Blitz is different from standard chess, as both players not only play against the opponent, but also against the clock. That makes some well known chess principles not being so applicable to blitz, for example:

1- Play sound, mainstream openings rather than gambits or too agressive openings. In standard chess stuff like king gambit, smith-morra, danish gambit or even 1.e5 2.Qh5 are not well regarded, but in blitz they  could be excelent surprising weapons to take your opponent off-guard, as they can make them run out of much time in the opening.

2-Bishops are generally superior to knights. The less time on the clock, the most dangerous knights become. That´s why in blitz they are considered better than bishops, the other way round than in classic chess.

3-Look for always the best move. Who hasn´t past the experience to outplay an opponent the whole game just to ending losing on time? Once you find a good move, play it, no matter if there is other better. Of course, sometimes you can miss mate in two, but that doesn´t matter much if at the end you win.

Can you come up with other accepted principles for standard chess that are not true in blitz?

Sure?