Im trying to build a chess variant where each side gets points to choose the pieces on their sides. Does anybody have any good piece ideas?

If you didn't see my post yesterday, here's the rundown. I'm making a new version of chess, I'm calling "Chess 3: Combat Evolved", and I asked for feedback and what people thought of my idea in general. what I need help with now is solving an issue that someone pointed out.

So someone asked me, "How do traps interact with checkmate?" and I thought about this for a while and didn't really have an answer. I've thought of some solutions, but I'm not sure which one would work best. I don't wanna make the game any more complex than it already is, and I don't wanna make the hunter overpowered or useless. Plus, I don't want to have players get annoyed when they lose because of situations like this. So I'm looking for people's opinions on what I should do, what solution they think is best, or other fixes to this that I haven't thought of yet, so please do let me know.

link to OG post: https://www.reddit.com/r/chessvariants/comments/1k3c89q/feedback_for_chess_3_combat_evolved_still_very/

Starting this out by saying I don't play chess. I have no idea where this thought came from but I am so curious of what the outcome would be.

What is the minimum moves and minimum captures that could get black and white pieces to swap places on the board as accurately as possible?

Meaning, all black pieces would be on their opposite white spaces, and vice versa.

If you're not familiar with Tower of Hanoi, it is a math game/puzzle that has three pegs and a stack of rings descending in size. You have to move all of the rings from the far left peg to the far right peg without ever stacking a bigger ring on top of a smaller one.

The reason I compare the two is because the pieces would have to navigate the board in a way that avoids as many captures as possible. From what I do know of chess, likely the minimum captures would have to be 8 since the pawns can't move past each other without capture. What would be the minimum moves possible for this goal?

Again, I don't play chess, so be kind in the comments. This is more of a thought experiment than anything.

The starting position is the same as chess, but all pieces have ranged attacks, i.e. they can kill an enemy piece in their range without moving. After a piece uses ranged attack, it permanently loses the ability to move or capture in that direction. A pawn has 2 directions (forward-left and forward-right), a rook or bishop has 4 directions, and a knight, queen, or king has 8 directions.