I've been browsing these forums pretty actively since the release of Leopard. There's been a lot of great suggestions posted along with some obvious bugs. I figure why not consolidate some of these to a single post. Why? I honestly don't know. I highly doubt Apple will implement many of the suggested changes. Instead, it will probably be added in 10.6 with 400 "revolutionary features" so they can make some more money. 
Anyways, post up any suggestions or bugs and I'll try to keep this original post up dated. Will be interesting to see how many of them Apple actually fixes and/or implements.
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Finder
Dock
Interface
Front Row
Bugs / Inconsistencies
Anyways, post up any suggestions or bugs and I'll try to keep this original post up dated. Will be interesting to see how many of them Apple actually fixes and/or implements.
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Finder
- Ability to 'Cut & Paste'. Currently you can only 'Copy & Paste'.
- Tabs that can be detached as a separate Finder window or reattached to be a tab.
Dock
- Option to set a stacks "View as" option to "Menu" (or whatever you want to call it). Basically to allow folders on the dock to be browsed like they were in Tiger.
- Right-clicking a folder in a stack in either fan or grid view should provide a pop-up menu to browse through that folder and its sub-folders (like right-clicking a folder on the dock in Tiger).
- Option in Dock Preferences to switch between 3D and 2D docks.
Interface
- 'Expand' option should remember what you set the window size too. In other words, if I click 'Expand', resize the window to what I consider "expanded", the next time I click 'Expand' it should resize to what I set it to before.
- Menu bar opacity adjustment option in “System Preferences > Appearance” with a “Reset to Default” option.
Front Row
- Bring back the old transition like it was in Tiger.
- Option to continue playing music through iTunes after exiting Front Row.
Bugs / Inconsistencies
- The color of iTunes when inactive is a darker shade of gray and not a lighter shade of gray like the rest of the applications.
- Command-clicking buttons in iTunes when it's inactive does not work like it does with every other application.