Alchemical weapons affixed with a mystical property on their third tier have never had a red augment slot, while alchemical weapons affixed with a martial property on their third tier have. This is something that I never really bothered to bring up before, as red augments were previously relatively useless to caster characters. However, now that the augment system has been revised and more useful abilities have been added, I would urge the developers to add red augment slots to these weapons to bring them in line with other caster-type epic weapons which include red augment slots (e.g. bejeweled letter opener, green blade, elyd edge, etc)