Good basic functions, but some added features will make it great

As someone who spends a fair amount of time in the deserts of Arizona, I appreciate a good topo map (and compass!). I bought this to be able to take a look at the maps Id dowloaded on my iPhone 3GS, but on my MUCH larger 26" screen. As a way to download USGS Topo Maps, its good. As a way to plan a hunt, which I was doing, not so much. Ive admittedly played with this for about 15 minutes, but Ive already got a list of things lacking/future improvements. They are:

Intuitive controls: Can only zoom by clicking the =/- button. Kept spinning the mouse wheel to zoom and nothing would happen. Very frustrating after the first couple of times. Squeeze to zoom/unzoom support would be awesome.

More functionality: The ability to stitch maps together into one large map would be spectacular. I can do this in my iPhone, but not here. Switching back and forth between the individual maps got very confusing, very quickly. I had no feel at all for how this particlular area of Arizona was oriented and no feel for how the individual maps fit together or were related to one another. Also, the ability to add waypoints or icons and plan routes would be great.

Unlike some other reviewers, the map dates arent really an issue for me. The maps are made, maintained and updated by the federal government, not by the developer of this app. The developer has absolutely no control over this whatsoever. As long as I know the map was made and updated in, say, 1967, then Ill know to expect some differences between what I see on the ground and whats on the map.

This is good for what it is, but with some added features it could be great.

FishMike about Topos US