Ok, I'll play for a minute...
I hadn't thought about it but I suppose it is...We can chose, or chose not to chose salvation...Just as Adam could have chosen not to disobey God...
And then you said, You're sidestepping the argument by declaring God to be whimsical, capricious and unpredictable.
I can't imagine where you got that from...I'm sure God knows what he's doing...And I'm sure that whether we think God is fair or not is of little consequence to God...
But, you see, I wasn't there yelling at Adam: Don't do it!. Yet, according to your theology, I'm punished anyway.
It is exactly the same as if the FBI suddenly came knocking on your door one day and arrested, tried and imprisoned you because your great grandfather killed someone.
You would be screaming mad at the gross injustice perpetrated on you.
As to your second point, by declaring that God can call fair whatever He wants to call fair, even when it is blatantly not, makes God capricious.
The only way you can claim God is fair when we think He isn't is if He knows something we don't. Are you saying that there is something about Adam's fall and it's imputation to us that God is not telling us about?