I definitely see what Rat is saying. The difference in what seed you receive in pools is very critical. Under theoretical conditions, a 1st seed gets a free match and then a seed 2 opponent. A 2 seed gets a 3 seed match and then a 1 seed match. A 3 seed gets a 2 seed match and a 1 seed match. A 4 seed will almost always lose to the 1 seed.
For a player of Rat's skill level, who may be roughly 2 seed level the seed will determine how many difficult opponents he has to overcome to place high. (objectively, only to make an example.) If Rat gets a 2 seed, he will probably beat the 3 seed and try to overcome the one seed. If Rat gets a 3 seed, he will probably have to fight someone equal to or better than him in round one, and then overcome the 1 seed. If Rat gets a 1 seed, he will beat the 4 seed easily, and have to play the 2 seed, someone about equal to him.
While I agree you shouldn't be entirely limited to getting your usual second seed, I think the best people need to be able to get a 1 seed to make the bracket play out correctly. I think you should have to beat people better than you to take the placings they would typically take.
Personally, if I play at a 5th place caliber, I want my best chance possible to get 5th place. I would rather the results be representative of how well I play. I want to beat the 4th place player to take 4th place.
Honestly, Rat, at this tournament you lost to 2nd and 4th place, and received 5th place. If anything, the bracket played out as it should have for you. you should have to beat the players marginally better than you to get 4th place next tournament. I see your concern, but the bracket seems to have played out correctly this time.
One issue I want to call out is the crew separation issue. I think this rule allows people in crews with good people to place higher. A mediocre player in a good crew is able to avoid all of his good teammates, where a player of equal skill level will most often lose out to those good players. I would love to be in a crew with tink and kels and avoid them in bracket as often as possible. I think crew separation improves chances of some mediocre players.
Pools should have maybe 4 varying skill levels assigned. Really good, pretty good, mediocre, and bad. An 8 person pool should have roughly 2 people from each category. If you hand seed the pools entirely you are basically choosing someone's opportunities to advance based on your expectation of them.
I believe the bracket should be generated such that the 2-4 best players are in separate quadrants of the bracket. I don't think people should be hand moved to make the bracket look as expected. The bracket should be regenerated each time there is an obvious flaw.