first, it takes a long time
second, the team play factor is very low here; you can win a team game and lose all the individual games

How is that possible? All games, both individual and paired, are components of one team battle. For example, in a team of 4 people. If you play individual-paired-individual, then two players play a paired game, and the other two play individual games. And everyone will play, and each game is important, and by combining paired and individual games, you can increase interest in the tournament due to a larger number of participants. By the way, teams don't need to be formed based on the principle of "you're my friend, so we're on a team." For greater spectacle, you need to divide individual players into groups and have them play their individual games against an equally skilled opponent from the opposing team. It wouldn't hurt to also divide paired players into 2 groups and form pairs based on the principle of pair = player from group 1 + player from group 2, but you need to clearly distinguish who is a paired player and who is an individual player. There is no need to emphasize that some people play well together and others don't, as the idea is just emerging, and perhaps in the future, it will be possible to play with established pairs.