It's not the point of playing multiple champs or multiple roles.
The point of TB was for people, like me, who are casual players, could play around with builds, champs, etc. at different roles OR we could practice those champs or roles without fear of being raged at for the entire game because we are trying different things or trying to get better at something that interests us, the casual gamer.
The "Dynamic Mode" is, without a shadow of a doubt, so much better than the old Draft mode. Not one single person disagrees with that. But, for the CASUAL PLAYER, it DOES NOT even compare to the quality of game and joy that TB brought. I think that's where a lot of this is getting lost in translation.
The fact is, TB was fun, it was enjoyable for those who played it. I played it exclusively with the random ARAM game in between to break the monotony of SR.
But, people, like me, who aren't that interested in spending most of my time (I might get 3 hours a day, if I'm lucky to play after work and all my husbandly/fatherly duties are done around the house) on spending more time in queue than the length of the game. The first time I played Draft, it took 3 hours to play 2 games that were /ff@20. Of those 2 games, I got my primary role/champ 0 times.
With TB, I was getting up to 6 games in the same time and in those 6 games, guess how many of those I got my primary role/champ?
It's not about casual gamers wanting to be pros or just bitching to bitch. It's about a significant part of the game that a huge part of this community really enjoyed. I know I miss it dearly, as every game I've played in "Dynamic Queue" has been a colossal cluster fuck, either the enemy team just face rolls, or my team face rolls. Never once has there been a game where I can say, "Holy shit, that was an amazing, exciting and entertaining game."
TB brought a quality to the game that I found joy in. Not everyone is a Bronze/Silver/Gold that's in denial about their placement. Some people really don't care about the pro scene or ranked scene. Some people just want to have a little fun, the way they want to have fun, without having to worry about getting raged at for playing something they want to play.