hmm. only thing about this is that compared to some games, DP maps load pretty fast. at least they do on my computer ... i'm guessing roughly 2-4 seconds for a map to load, if it doesn't need to be downloaded. and with build 20's improved download speed, even downloading a map wouldn't provide much of an increased delay in map loading.
so my point is that if something is put there, it most likely wouldn't be showing long enough to read it.