Welllllllll, the simplest solution would be if everyone who signs up for a duty would just play and finish, be civil and not troll then their would be no issues. Since that's not the case all the time and people don't want to get along. How about a simpler idea? Instead of having all these convoluted filters, screens, who kicks who for whatever option, kicking costs, locked out for a month, having to fly to japan and stand in line to beg Yoshida for forgiveness to your sins. Or whatever else that makes party's feel like a warped job interview. Along with asking for systems that will in some way shape or form be abused. All so people can ask for more systems to counter the abuse of the abuse of the abuse. How about this instead.

Story mode dungeons soloable or with NPC companions. Do we really feel like a better hero with three other Warriors of Light or would NPC's give that same feeling? Since people want to treat each other as NPC's in a majority of these dungeons anyway. Does it make a difference if your grouped with designated NPC's?

Viable content for solo/duo players to earn tomes effectively (real content, not one that involves hitting a que button!). Skip all the headaches and stress all together! Since tome gear is recycled in major patches anyway does it really harm anyone if the solo player or one that is quite happy just playing with a friend is able to cap tomes without setting foot in designated forced four player content? Even up the rewards for four player content for those that wish to do it. If que's increase it may just send the message to the devs why players would rather solo instead of doing group content and make them see what's wrong with group content.