This sentence doesn't make sense to me
it sounds as if you are saying "in doing away with gksu, (the) pkexec and admin:///" which is not accurate in context of entire sentence, as I understand it. (it does read as I think you intend it, if semicolon is used in place of that comma, so more a grammatical nitpick allowing confusion than a bad statement) Also a note to readers may be well served - that while gksu has been removed the other elevated privilege commands su, sudo, pkexec and admin:/// are all still present.I think doing away with gksu, the pkexec and admin:/// developments for launching graphical apps with elevated privileges is dumb and that it's being poorly handled by whomever upstream
I also feel it would be wise to include some of the warnings and the example commands shared that reference thread you linked that show rdepends of gksu so folks can determine if they even need gksu for anything, otherwise why even bother to install it?
ps, from ref thread, Quote of the Day: "Might as well play sudoku until this mess is figured out"$ apt-cache rdepends gksu
$ aptitude why gksu
i menu Suggests gksu | kde-runtime | ktsuss