On Removing Team Builder...
Riot, you should never do this.
With the new Champion Select, it makes sense for it to replace all Draft-Style Summoner Rift Queues. However for non-draft, Team Builder is THE "Go-To" for low-drama training of new champions and/or specific roles on The Rift. To remove Team Builder is only going to increase the toxicity in normal games, as summoners grow increasingly frustrated at people dodging when they don't get their position, needing to dodge to not play in a situation they don't want to play in (but having no other way to queue appropriately), or the worst case scenario of someone not dodging but caring so little about the game they feed, go afk or otherwise troll the game to hopefully surrender at 20 so the summoner can try again in hopes of getting their desired position.
For all the good you have done in an attempt to lower the MM queue times and toxicity in the community over the past 3 years, You are taking a giant step backward if you follow through with TB's removal for BP queues. It is a terrible idea and whoever thought it was good, they all deserve to be slapped, hard.