FFXI AH system was very good imo
not saying that they should put it that way no i mean not showing the prices
because in the mean time we are witnessing great undercutting in almost every item in the markets because the prices are shown to players which will eventually lead to a deflation and will resort to players not wanting to make gil which will result alot of players to quit XIV

and yes Syncing the three cites market will solve the retainer issue and also make uldah less lagy
and about that shout Chanel we have it its the search system that so many ppl wanted it but no longer use it
u can put "ifrit/mog/cc/av can i have it" and we would get invites instead of shouting in uldah