Still not very much in favour of this.
Except for Religions (because you can only join 1 religion), why would anyone else on the continent care what rank/title you have in a certain guild? (Cfr. Gabanus comment). What if I don't want any religion/guild title to be displayed?
Also, if we're only going to display the biggest guilds, the 'regular' nobles without a title will probably not have any meaningful title in such large guilds anyway. By experience I know that the ones with many titles in a realm usually take up the elder seats or any interesting 'titles' in a guild. While others just get a 'Knight' 'Aspirant' 'Follower'. Which does not really contribute to anything..
I'm rambling, maybe I'm not clearly seeing any advantages for this feature at this time. It's not that I'm completely against.