Split Your Money Is No Good Here into a video game gameplay mechanic trope about "an otherwise universal video game currency not being usable in a certain area of a game" and a general trope about "a character finding his/her money is no good."
Pro: Would preserve the current trope definition as well as creating a general media trope for the misuse.
Con: Would take more work and a YKTTW for the general media trope.
Con: The current definition can not be revised to include non-videogame examples as it is a game play trope. This option would require the current trope to be completely discarded and a completely new definition written from scratch.