I hated it at first, but I think it adds nice touch to the game. I remember first time I added a splitter on a belt carrying U238 and that put it in my inventory. I kept running around the map to move away from uranium and eventually died and thought it was a bug in the game.
Maybe do something about "accidental" pickup of radioactive elements that they stay on the ground or a message that says "you have radioactive material in your inventory". Currently it's the same experience as being next to uranium.
