5. Electronic elementals. Like chaos elementals, but blue, and upon teleporting and death, little lightnings would shoot of them, electrocuting nearby players. And also would tsap the player upon touch, giving "sapped!" debuff, slowing you down and damaging if you enter water. Immune to lava but damaged in water, and if they touch water, the water is electrofied, so everything in it is damaged.
6.When using a firearm the cursor would turn into sight, cross or skope whatever it is called in english. Also sword would turn the cursor into small sword. Or then not, the gunsight IS better idea than sword. I think.