2 queens is much easier to mate with than 1. There was even a grandmaster game played where 6 queens (3 on each side ended up the board) it was in one of gothams recap videos. It was fair as both sides ended up getting 3 queens and it was an interesting game. This guy would have wanted them to promote to bishops and rooks and knights for no reason.
Again, you want easy chess. Not hard chess with more advanced strategies. My point still stands.
Case closed, again, troll!
Actually that is completely wrong. A game with more queens is harder as you have to take into account all the squares they can move to and all the potential tactics, perpetual checks, skewers, and interactions with other pieces. A knight and bishop vs a knight and bishop can't do that much. For example, tablebases show that in positions with QRKQRK, the first player to move wins 76% of the time. In fact it's harder to find positions where it's a dead draw as the pieces are so powerful. KNKB on the other hand blundering into a checkmate is virtually impossible as the players would have to cooperate in setting up the checkmate. 2 queens vs 2 queens there is some game left. With a knight and bishop vs a knight and bishop, not so much.
LOL you are the one who wants easy chess, by wanting to decide for your opponent what pieces they can promote to. The position being unrealistic claim is ridiculous. Top level games the pieces can end up in almost sorts of weird positions and underpromotions happen at top level too. A rule has to apply to all positions, not just the "realistic ones". If you checked out my underpromotion thread, you will see underpromotion problems/duplicate promotions can arise from very realistic endgames and positions. But that's besides the point. I don't see the logic of why your version is more strategic. If anything, having to consider the results of more possible pieces a pawn can promote to makes the game more complex. I mean you are saying a pawn couldn't promote at all if one of each piece was on the board? What happens then? They just become props on the 8th rank, or stale on the 7th rank unable to move? Your logic is akin to saying we shouldn't be able to capture our opponents pieces with certain pieces depending on how many of each piece both sides have. Chess is not a material count game, it is a game of position and checkmate.