Playing with friends in DQ does NOT demonstrate or improve teamwork
having voice chat with part of the team WILL make you pay less attention to rest of the team. potentially reducing your map awareness and ability to cooperate with people not in voice chat with u.relying on playing with people you know on voicechat will make you worse at utilising ping and cooperating with strangers.
I guess Rito think teamwork means having buddy on voice chat, meanwhile for the past 5 seasons teamwork was more of the ability to cooperate with solo queuers.
If you can't work together with other people you don't know, how is that teamwork?