Oh I'll be doing some banging.......
Although regarding HypnoDisc- the teeth have the same potency as they did in DSL 2.1, but it's the much better motor (A Tornado Mer Gearbox rather than a Flatmotor), along with how much bigger and more durable they are that makes them that much more powerful.
Firestorm's wedge could also be improved a bit. Currently, the top part doesn't even touch the ground, so it's very hard to get under opponents effectively.