Sounding good, Still really enjoying geocaching and your application, I've got the kids out geocaching now, they think it is christmas everytime we find a box full of goodies. Even found a geocoin, retrieved it and waiting for a good cache to leave it.

Like the sound of the sun indicator, not that we get a lot of sun here in the UK It will save my legs from having to determine direction.
Double map size sounds a little excessive, if you can I would suggest probably 25% increase. (I wish my eyes were 20 years younger)
Speed has never been a problem for me (another effect of old age)
Out of Bounds? I haven't even got a clue what that is.
Coordinate Input? another question mark, I still have a lot to learn.
Browser links. Not sure whether I will use links as this application is so complete I don't often have to go on line.
Proper no fix handling - A feature I hope I never see. An N900 losing GPS fix, surely this is never going to happen.

I would like to see an option for trackables though.

Thanks for the update, hope to see it in the wild soon