The menu bar allows for an infinite size target when flinging the cursor at it using the mouse.
What functionality do you find missing? Usually a right/context-click or command click will get what one is not finding.
By way of contrast, the Sidebar will accept an arbitrary number of files/icons, and they stay put, and if one drags into a file dialog window, it updates where it is pointing rather than performing a file copy operation (what happens if one cancels?).
Anything else one wants can be handled via AppleScript.
Similarly, there is drag-drop into Terminal windows, and check out how the commands pbpaste and pbcopy interact w/ Unix pipes and so forth.
FWIW, I miss the (NeXT-derived) Miller-column Filebrowser on Windows, and the "Unix Expert" checkbox on Mac OS, and the right-click pop-up main menu which made some commands gestural on either.
Installing via drag-drop on a disk image into an Applications folder shortcut avoids the need for a special tool to manage app installation and makes uninstalling as simple as dragging into the trash.
The 2K monitor thing is a hardware/firmware/driver issue I'd imagine --- was it sold as supported by the Mac OS you are using it with?