Well, I think you're saying we should just trust that God is good and that he knows what he is doing. I just don't think I can do that. I recall how many Germans during WWII were told that the things Hitler was doing were good and that he knew what he was doing, and I can't help but see the parallels. Yes, Hitler was a mere human but that doesn't mean the analogy doesn't fit. I don't think I can put my moral compass on hold and just assumed God must be good despite the evidence just because the Bible tells me so, because I could never forgive myself if I turned out to be wrong.
I guess I'm going to have to wait until I die and face God so he can give me an acceptable answer to his behavior. If his answers prove he is moral, then I can worship him. I think that's the only truly logical, moral position I can take since neither the Bible nor God himself provides sufficient evidence on God's true character to make a truly informed decision. What other choice is there for a person who truly strives to be a good, moral person?
In response to your reference to the fallen angels...if God is all-knowing, then he knew before he created the first angel which ones would rebel and why. He knew that Satan would rebel. Yet he created those specific angels anyway, which means he must have wanted them to rebel.
Furthermore, is it possible God never told the angels he's all-powerful and all-knowing? Because if they knew, and if they're capable of rational thought, then they had to know that it's absolutely impossible to rebel against anything that's all-powerful and all-knowing and get away with it.
And if they knew they had absolutely no chance of succeeding, why did they rebel? The only instance I know where a rational, intelligent being will choose to fight a guaranteed losing battle is when fighting for a greater moral principle, a symbolic gesture to send a message even in failure.
I'm beginning to see a pattern here. God may not be what he claims to be. I'll need to read over the OT and NT again to see if there are other areas where he may have behaved in ways contrary to what we know of as good, loving behavior.