1) It doesn't and it never did.
2) Dynasty
3) No.
4) Yes, whenever you use a blow (Kamael+), you do certain amount of damage (around 1-2-3k, depens on the foe), however, you can strike a critical blow, which you can see in many Kagan/gustavs movies, where they one-hit their enemies for 5k+ damage. That's why Critical Rate is needed. Not needed on C4, because you can't crit with blows. Not sure about Interlude because there are so many javas that I wasn't able to test it on a decent server.
5) If you mean this one , then it is very easy. You usually use it as a first blow, because it increases other blows' success land rate.
6) Evasion vs pdef what?
7) Not sure, but I think it does, slightly though.
8) Yes, for sure. STR is overrated though, it increases chance/lethal rate, but of a veeeeery little proportion. (-8 STR dyes is normal, as I said STR is overrated, it's same as going -8 DEX on Tyrant, which is normal)
9) Reflect buffs never did give damage back from skills or remote attacks (arrows), so nope.