All the weapons sound really good. The Eureka Effect is a fantastic idea. If you get in trouble (eg a Ubercharge destroys your stuff) you can teleport away plus you can teleport to get more metal quickly and the Third Degree could be useful. You could double killing when you crit
Also Degreaser + Flair Gun + Axetinguisher remains one of the most
annoying loadouts in the game. Fucking hate Pyros.