This is a lag machine that is perfectly constructable on your server using whatever redstone is still working (pistons and redstone torches). Disabling redstone doesn't remove the possibility to make lag machines but it do remove the possibility to make cool redstone doors and other constructions to add to your builds. To me this is not worth it. I know redstone will cause lag but you can use commands to lower the tickspeed so the redstone works slower and therefore makes less lag or you can make a limit much like the armorstand limit in each chunk with like max 20 pistons on each plot to also counter lag. People have also made lag using world edit placing fire over their whole plot but nothing is made to remove that. There is no good reason to be able to place fire with world edit because fire is not a "block" you would place a huge ammount of unlike grass or stone. I suggests that you remove the possibility to place fire with world edit like you did to not be able to place gravity blocks . You should also make redstone enabled but put a "redstone limit" on each plot and maybe lower the tick speed because slow redstone is better than no redstone. Thank you for reading this.