true however what about the other types of list views? group views icon support etc it brings a bunch of new stuff that mIRC doesnt current support i see a very buggy release in our future if that comes into play...
youd haveta have like
reportview 1, x, y, w, h, style
iconview 2, x, y, w, h, style
treeview 3, x, y, w, h, style
then like on *:init just like mdx
did -(some switch thats not taken that can mean columns) $dname $did col1 col2 col3
but even then theres soo many options like left align right align cent align the list goes on it would be a lot for khaled to tackle imo though i think treeview wouldnt be quite as bad at first to implement.
while what your suggesting is functional its the mere basics and really hardly provides more features than a regular list box so if khaled was going to add them it come with additions to many of the identifiers in place and be a major undertaken to support all the options people will want...