Yeah some way of easily telling tree groups would help - I just don't bother and use attack move as I don't have the time to try and figure out what's a tree group and what isn't, but would be nice to have better information on this so if I wanted to I could try and make better use of tree groups without needing to memorise the map in question. I'd probably prefer including the mass and energy values for tree groups (but not individual trees, to avoid too much information on the overlay), or some special icon/other visual indication (that happens when activating the reclaim overlay), over 'zoom out to a particular level and you can see tree groups but not individual trees', although the zoom out option would still be better than nothing.