Reason 1 : Icon is white for every TIAdd material which makes it hard to know which is which unless you know name of material you are looking for.
Reason 2 : Preview is blank for them so you have to apply material to selection to actually see what it looks like.
Reason 3 : UV can't be customized since it only shows automatic projection preset which makes TIAdd materials nearly unusuable.
Those materials are incorporated in newest update of RPG titlepack which is available since yesterday so you can download it and check by yourself.
Thank you
