We can rebuild him; we have the technology
I love Android and am also a developer, but I think the mobile Market is horribly designed.
For each app, there's the app icon on the left, which takes up 20% of the real estate for each item. Then on the right there's a 0-5 star rating which you can barely read, as well as a price tag. That's another 25% gone. All told, fully half of each item in the Market consists of its icon and price, which is useful information but that's also too much overhead; I say this because the name of the App is between them, and looking at very the top 6 on the list, 3 of the app names do not fit.
You can't even read the full name of 50% of the apps on the top list! It seems like a minor detail but it really disrupts the browsing experience. The name can't wrap onto the line below it because that line is reserved for the developer, which is also important information, but it is of secondary importance to the app name, imo.
Okay, so let's turn the screen sideways. You'd think that you'd get longer, more verbose entries, right? Wrong. Instead, half of the screen is now taken up by a big green blob of crap. Given that the height of most screens is not twice the width, you actually have even less text space in the "long view", and this is why I NEVER use widescreen in the market even though I use it for almost everything else.
Here's what I think. Just halve the app density, at least for the Top list. Every app should get two rows. The top row can stay pretty much as it is, and the bottom row should have a *brief* synopsis of what the app actually does. Currently, to get this rather important information, you have to click an item from the list and then usually click a 'more' button to expand the description because it only shows the first 3 lines by default.
For example, item #3 right now is "Wyse PocketCloud P" for $14.99. I can guess that the full name is "Wyse PocketCloud Player" but why do I have to? To actually find out what it is and why I should pay $14.99 for it, I go into the info page and read "PocketCloud enables remote access to Windows or Mac desktops over WiFi and 3G/4G networks" (blah blah blah) Okay, that's pretty awesome. I suspect that if this one-sentence synopsis were immediately visible, more people would buy it.
So, overall: make the entries twice as tall, and change the widescreen mode so that it makes the Market more readable and not less. Or even keep the landscape mode as it is, and save my "more verbose entries" idea for widescreen.
Did I mention that the widescreen Market absolutely blows?
The desktop Android market, on the other hand, is awesome. Trouble is, most users (when I say "most users" I mean "my mom" which I think is a reasonable approximation) don't even realize it exists. Maybe this could be somehow rectified, too? Just sayin'...