In things relating to salvation, yeah, it's dangerous territory to start speculating but in terms of relating to God, I honestly think, more than anything, he is amused by our speculations of him as a Father or Mother would be assumed at the speculations of their young children. I think if he didn't want us to ponder him and who he is, he would have only given us the Word and not also revealed so much of himself in the world around us and through our interactions with other human beings.
In terms of what heaven will be like, in the end I don't think it really matters, we will all be wrong, because what awaits us is beyond imagining, is beyond our comprehension. I take the Bible's physical descriptions of heaven "with a grain of salt" because, personally, I don't think jewels are very pretty and I am not impressed by gold. I think what was trying to be conveyed is that it is a place of beauty beyond compare, where there is no want or squalor...and so much more.
With that preface, on to more speculating.
I have often heard people say, "When I get to heaven I'm going to ask...," but it seems like the persons intent is to ask it right then, right when they get through the gate or even when they're standing in line at the door. If you read the Psalms, you God is comfortable with questions, he doesn't always answer them, but David asked a lot and he was called a man after God's own heart.
We are going to be an eternity in heaven, a "time" so long that it ceases to be measured. I think there will be time enough for every question and that we will hear every other persons questions and that we will be encouraged to ask more questions and have innumerable questions answered without even asking. Why? Because through our questions we will understand God more fully, through others questions we will understand him even more fully, and to understand God more fully is to better be able to praise him, because we will better understand why he is to be praised. I think heaven is partly going to be a show and tell of how God worked in your life (what you understand of his work before your questions and even more after your questions have been answered).
I think one of the experiences of heaven is going to be looking back at our life through the eyes, maybe not of God (because even our "indestructible" souls would probably explode or something), but through the eyes of heaven. I think we will see how everything effected everything and everyone else, how everything was connected together. I think at first we will be consumed with an almost overwhelming sadness, for we will see all the opportunities lost, all the good deeds prepared for us that were left undone. Now, before you tell me, "There's no tears in heaven," let me finish. I think we will then be be shown the picture more fully, that things will be pointed out that we didn't notice at first glace. I think we will be shown how God "has caused all things to work for the good of those who love him," how God managed to take our feeble attempts when we tried our best and caused everything to work out beautifully, to realize he made our individual imperfections into a whole that is perfection.
So keep on saving up your questions and, when we get there, don't be scared to ask...but maybe wait awhile, merely gazing at the face of God will probably answer thousands of questions we never knew to ask.
Also, try to look at your life and the lives of those around you through the eyes of heaven. Try to think, "How is God going to use that in the picture?" "How is God going to use that aspect of that persons life for the ultimate good?"
Maybe sometime soon I'll make everyone nervous by devoting a post to trying to describe God, but I think this is enough speculating for now. :)
P.S. I think if I do have a "crown" it's going to be made of something living with leaves and flowers incorporated in...and maybe have a hummingbird nest on it as well. Whatever it is, it will match me better than I could ever match it myself and yours will match you.