In that case it will be quite workable. I just want to keep the current +3 / +1 / -1 / -3 scoring system - it's real good, each position is clearly differentiated from the next one, so there's always something to play for.
Feedback about the new 4PC version

I would like to know why I get so many notifications when I play. When I start a game it will say multiple times, probably 2 to 3, that my game is starting. What is going on with that.

Please report bugs here: https://www.chess.com/clubs/forum/view/list-of-known-bugs

it would be good if take back button or back to specific line just only for casual game given in normal live chess.com it given for rated so should given at least for casual games for analyzing

I,ve seen many queens facing together with not protection.in order to restrict it because it may be a pre arrangement team.use a rule from checkers.
First players must take a non-protect piece no matter how may it cause.
If there are more than two pieces with different value on board,player must have the most valuable one.the having rank is ''king,queen,rook,Bishop,knight,pawn.''
Checkmate is sacred,so it is unvalued,and when it happens with the rule,the checkmate is efficient,but minus the highest value of the piece you can take.stalemate is the same,but it cannot happen when you can have the chessmen.
And the left player can't sacrifice his pieces to check the player,
I,ve seen many queens facing together with not protection.in order to restrict it because it may be a pre arrangement team.use a rule from checkers.
First players must take a non-protect piece no matter how may it cause.
If there are more than two pieces with different value on board,player must have the most valuable one.the having rank is ''king,queen,rook,Bishop,knight,pawn.''
Checkmate is sacred,so it is unvalued,and when it happens with the rule,the checkmate is efficient,but minus the highest value of the piece you can take.stalemate is the same,but it cannot happen when you can have the chessmen.
And the left player can't sacrifice his pieces to check the player,
This is not a phenomenon of directly pre-arranged teaming. Likely the players have never communicated with each other, and this could likely be checked. Players are just following the meta. Another way to put it is, because the meta in 4pc has developed, I assume that my opposite is going to support me.
The reason non-prearranged teaming is legal is because the things you mentioned would be very restrictive. More inherently, 4pc is a game where optimal strategy necessitates that I'm going to be attacking and helping different players at different times. To give an example, what if blue and yellow are really weak and red is strong? If they all want to win, then blue and yellow will temporarily team with each other to take down red, sometimes putting their pieces where each other could take them because they know the optimal strategy is not to. Opposite teaming is no different.
Players will be able to join all 3 variants "queues" at once, if they wish. So, the waiting time won't increase.