Remote mine targeting and two questions to GGG

Remote mine+fireball=detonate the mine and it casts a fireball at an enemey. it TARGETS the enemy.
Same goes for remote mine+arc.
but why when I'm using remote mine+firestorm it casts the firstorm ON the mine? it doesn't make sense, especially when totems do target enemies and not cast the firestorm on themselves...

Please change it, I wanted to play a firestorm miner but looks like I'll just be an arc miner (like vanguard) and I like playing unique builds.

Two questions:
1)Will remote mine's dmg multiplier after the next patch effect lightning trap? (I know that skills linked to trap gem wont get the dmg multiplier from remote mine)
2)Will "high explosives" node effect remote mine+lightning trap twice since it's a mine which casts a trap?

Mine cast a Lightning trap, Lightning trap cast a ring of lightning balls.
Mine buff the Trap damage, Trap do nothing damage, sorry get zero buff.