It's a good idea, but so is world peace.
I'd love to make a feature like this, but it has a lot of implications and work behind it, to do in time I don't have at the moment!
But it may happen :)

It would be a nice thing to have, but it's also a very tricky thing to implement. I might have to look into it at some point, but right now, other things have priority.

Well, it is possible already as it is, you just need to do the setup for it. Feel free to ask around in the forums on how to do it

There is, but it isn't exposed in SF at the moment.

How about if you put a sin node after time, or use a more continuous wave instead of a frac (sawtooth) wave?

http://acegikmo.com/shaderforge/wiki/index.php?title=Waveforms

Interesting! I never knew it was useful :)
I might have to add it then, shouldn't be too hard to fix

Could you elaborate a bit?