After discussion about setting the standby temperature for the idle toolheads, the thing I want to do is pre-heat them 'just in time'. Is anyone aware of any slicers, post-slicing tools, or an OctoPrint plugin to add in heating commands in advance of the tool changes, so each tool should be hot when needed, but doesn't need to be kept hot all of the time? (I.e., minimum time wasted waiting for a heat, while minimum wasted energy and dribble by allowing the heads to cool when not needed.) (I realize any pre-computation of this will be an estimate and not perfectly accurate -- only an OctoPrint plugin would be in a position to actually monitor the print progress and make more accurate guesses.) Unfortunately it looks like Simplify3D doesn't embed time estimates, so this isn't just a trivial script.