New variant - does this sound great?

How great would a variant be if it involved putting more than one piece on a square?

I noticed in one Tactic black was checkmated because his King could not move on the same square as a Castle.

That is unrealistic. In the real world, the King could just hide in the Castle and be safe.

In this variant, we could move same color pieces onto the same square.

Then the game could end if the Rook is captured with the King on the same square.

I think this would tend to be good for the King. Maybe it would be more of a theoretical draw than normal chess.

It might be interesting, more than great?

Also I do not know what to call it yet.  Chezz maybe

ok i was making blueberry pancakes and watching about British islands and Shackleton and global warming

1. Ne2 good move!

There is still no jumping over

1. Ne2 Bg7

Whoa hold on, Qxd8+

That wins?

This is just so exceptionally cool and hip that I have no comprehension of what it means.

Can there be even more than two pieces on one square?

And can a white piece just go on the same square as a black piece without intention to capture it?