Suggestion

This may have already been suggested but I've not seen it anywhere before, but have a method or display to show how long a buff has remaining. Also allow a buff to replace a buff. For example you have placed a two hour buff on an workshop and it is due to expire in 30 minutes, but you have to head to the movie with your mate, it would be great to be able to "eat" the 30 minutes and put on another 2 or 6 hour buff. They definitively should not stack, but being able to override it should be allowed.