1. its actually great for spindashing on the left side, because you can cancel the SD into a up tilt that slides rediculously far.
2. gimping is hard to do in thist game to begin with, any sonic main will tell you that they will always choose to kill flat out with a back throw as opposed to trying to gimp ppl all the time.
3. up smash, up tilt and up throw all can be used as legit kill moves on corneria, they kill at moderate-high damage, ESPECIALLY at the top of the fin.
4. the planes dont kill anymore, and sometimes i think spicdashes go right through the lasers, where as they can completely shut down, or otherwise discordinate the opponent.
5. it is just you hating the level
the slight slopes can mess up CGs adn some peoples auto cancels and you can set up for kill moves off the fin.
being able to kill with throws with sonic is seriously a godsend.
its a great stage for him
btw, never EVER use it as a counter pick against anyone that has a fingay or wall gay
D3 will infinite you
ike will spam aether on the fin AND infinite you on the wall
MK will spam shuttle loop on the fin
pit may be able to inifinte you on teh wall with f-throw (this one im unsure about)
Fox can infinite you with shine
and so on...