So now that 14.04 was released and the most active questions on this are from 2011 to 2012 ([1] and [2]), I'd like to ask again just out of hope:
Is it possible to change Super + T from starting the trash to starting the terminal without altering all the other shortcuts related to Super?
Or what are your current best practices to deal with this?
Install CompizConfig:
Then run it from the dash and look for the section called key bindings or something similar. Look for the one that opens the terminal, and you can change the keybindings there.