Your list / My Opinion

#1 - while it s*cks, Y is still Y that is not a "downgrade" just a really bad seat assignment. Why'd that happen, how'd you find out, etc No other open seats available?
#2 - that should have been sent as a complaint to RCC, probably separately - you don't say why/who/how you were denied access but I've never had a problem like that.
#3 - this is the only one where you'd be due something. Were there no other seats available for you to move to?
#4 - there is no guarantee that the elite lines will be available, sorry you had to mix with the masses btw, that's an airport not airline complaint

For different reasons than the previous post, I think the 10K was fair.