I have just posted the below to Smartthings support and they say they will pass it on to the relevant department. Maybe if enough people ask for the same update it might get pushed up the list???
*I really like the ability to fade my lights in an automation. What would make this feature much more usable would be to remove the necessity for a start level. Ie it would fade from the current light level to the target level. *
Also it would be great to be able to specify a much shorter fade duration.