I don't know if it already was out there but I decided to go ahead and write it.
The actual vi:
https://drive.google.com/file/d/0B4f...it?usp=sharing
A vi demonstration how it can be used, it's very simple and shows how powerful such a simple vi can be. makes it extremely easy to setup a sequence of timed events either one after another or in parallel all with different durations.
https://drive.google.com/file/d/0B4f...it?usp=sharing