- It would be great if you could set your document background to have a checkerboard pattern, not a solid color. Sometimes you work with images that have different colors and ... it can be a mess sometimes.
- More objects transformations with the mouse. Currently, if you want perspective, you have to use the effects menu. One of the greatest thing of PSP, is that you select an object, or group of objects (or paths) and you can drag the handlers to produce different effects. For example, perspective, you start with a square, then just drag the, say, top left handler to the right while pressing Ctrl and you end up with a trapezoid. Or you drag a handler while pressing Ctrl-Shift and you can distort the shape to whatever direction you want. Obviously, in Inkscape we already have Ctrl, Shift, and Alt used for other things, but... I don't know, maybe a new tool?
- Shapes or clipart gallery. Currently you have your "basic shapes collection" in a folder. Then, when you need them you have to import them as you would import any other file. It would be really nice to have the function incorporated in Inkscape itself.
- "Object explorer". In PSP you have this palette that shows you all your layers and object and groups in a tree-like style. Its very useful when you are struggling to select some object hidden behind 15 other things

- Double click in textboxes (I don't know if this is something with Inkscape or GTK). What happens when you want to select a whole word on a text field? You just double click the word. Well, in the color Hex code textbox, if you double click the code, you end up with some kind of "similarity" selection. If you double click a number, then only adjacent numbers get selected. If you double click a letter, then only letters get selected. It's kind of frustrating...
- Triangle in the color wheel. What about changing the triangle to a square? You have luminescence in the Y-axis, and saturation in the X-axis. I find it a lot more easy to use, for two things: 1) you have more space, it's bigger. 2) You can easily modify one parameter without modifying the other.
- Recent colors popup. In PSP, in any place you can select a color, you can right-click and you get this "recently used colors" popup menu. It shows you the 10 last picked colors or gradients... Again, it's a fantastic thing...
- Node rotation. Again in PSP, when you select a group of nodes, you get a box around them, and you can use this box almost as you would use a box around an object. You get the rotation handle, so you can rotate the selected nodes. Currently the rotation transformation in Inkaspe only works with whole objects, not nodes.
- Path highlighting. I think it would be a lot more easy to see if the path (when editing nodes) were XORed color instead of the one defined in the Inkcape preferences.
- Editing of numbers in spinedits. In PSP, below every spinedit box, you have this kind of "progress bar". So you can insert a number by typing it, by clicking the up and down buttons, or by clicking and dragging in this "progress bar". It pretty handy when you are trying values for something.
Anyway... It think that Inkscape designers could get a whole bunch of nice ideas from PSP.