The solution here is the same as for every playstyle related troubles throughout the game. If you want to be sure you play with a team of your chosen skill level, make that team before queuing up. While the roulette only allows solo queue, there is nothing stopping you from going in premade full party when queuing straight for the duties. Nowadays it doesn't even matter if you are from different Grand Companies, if the party has mixed GC people it automatically puts you together in some of them.