Ctrl + E focus on "filter processes" in "Attach to process" windows
Almost all windows application has the shortcut Ctrl + E to focus on the filter/search box. (try in windows explorer, windows store etc...)
It would be awesome to have the following for the Attach to Process dialog.
1. Ctrl + Alt + P
2. Ctrl + E
3. My process.exe
For point 2, I would say that the list is focused by default. So no need for an extra shortcut.
For point 4 and 5, you just need to hit Enter after your item is selected. The shortcut Alt+A already exists by the way.