Yeah! The lack of verticality in the camera is weird limitation for myself too, actually. I thought it'd be interesting to try and design it around there, but I was thinking I should let a little vertical camera movement.
Really- the real reason is that I wasn't 100% sure if I had time to calculate the 2 axes for an object for locking in. If I guarantee the player can scale upwards, then it's just a matter of getting either the X or Z axis. I definitely wouldn't have had time looking back on it, I was working on this up to the clock on the dot lol.
I really figured a kill plane was impossible, but I did use really jank movement, so yeah.
Thanks for your comment! Appreciate you gave it a shot. If I ever update it, I'll definitely consider both those suggestions!