Nah, not that fun when you actually think about it,
but I might give it a try if it is added
There is this thing called Shogun chess which is like exactly the same with some extra rules
though I never heard of it, this is what most of those new variants suggestions are, just a small variation of another established one,
like I know once in a while a new and amazing variant is thought of, but if chess.com actually made every one of those "new" variants, we would have a few hundred that are just laying there and not a single soul except for the one that gave the idea are willing to play it, making it just stupid to even think about it.
even the name for the knight promotion is exactly the same.
https://www.chessvariants.com/rules/shogun-chess
I also thought of it, only that of course promotion is only on the 8th rank and the queen promotes up as well.
In Shogun a pawn promotes to a "general" which moves like a king but isn't a king.
Because there are drops like Shogi / Crazyhouse, when you drop a captured queen it is only a "duchess" or "ferz" but it will promote if it moves in the right area and if you don't have a queen already on the board at the time.
Classic chess, but any piece (except for the king and queen) is turned on the 7-8 ranks.
The pawns are transformed on 8 ranks for White (1 for Black) into a knight, bishop, rook or queen.
The rook turns into a cannon (the cannon moves like rook + knight)
The bishop turns into an eagle (the eagle moves like bishop + knight)
The knight turns into a general (the general moves like king+knight)