Well Zabuza and the fatty (the one Kisame later on killed to get his hands on Samehade) survived for sure.
Probably because Dai ran out of juice before finishing them all. Sage Madara was shocked at how quick Gai was (look at the "?!!"), I can't see any of the 7 swordsmen beeing able to fight with 8 Gate Gai or Dai.
^^
Zabuza is younger than gai ..
Zabuza died in part1 at age of 26 while gai was 28 in part1 so that man is not zabuza
Fuguki Suikazan was killed by Kisame so he definitely survived that battle.I don't know about the rest though.
Raiga survived lol.
I honestly don't care to see that fight. Personally I don't want to see it used in the past and then now against Madara. Madara has special abilities and what we see in the past might develop a plot hole or be completely useless against Madara. So there is no need for that fight scene to be shown.
Some people just wanna see it for hype of their character. But right now I'm all about story progression since we got so little right now.
I'm not saying that all the moves that Gai has in his last gate will be useless, I'm just saying that there really is no need for us to see them done by somebody else before the Gai vs Madara fight is over.
At the bolded part, I highly doubt they would be the same moves. My reason being is that 1) Gai would never had seen the done before. 2) there is no way to train in the 8th gate moves, so my guess is that each person that uses the 8th gate will have their own custom moves.