most ppl use 1.8.9 cuz they are better with 1.8.9 and there's the pvp advantage of no weapon cooldown, but then noone realizes the mobility advantage of 1.16(1.9+ in general). You should add snow layers (like 1 gold per snow layer) so 1.16(or any 1.9+ version) players can use their mobility advantage to trap(1.9+ has a higher jump height than 1.8, a small differance, but there's a diference and it can be aplied using e-tables or snow layers(1.9+ players can jump 1.25 blocks, 1.8 can jump less(1 pixel less, but can make a difference if exploited the right way)))