And my non-technical opinion:
Forget about playing whole intro's. There will be occasions where it is a requirement or comes in handy (30seconds break + walking + cleaning

) , but to keep the flow it isn't really needed.
If people want to listen to music they will do it at home.
The advantage (i see) is that you can use way more tracks that people might recognize and stay in better control of the flow.
Unless of course you want to play 1 track for like an hour with all the features like FX, loops, samplers, pitch, ....