Edguarding is a dirty mechanic
![C-Frown :c :c](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Seriously, it shouldn't be a common way to get KO's, it's dirty as hell! I'd be OK with them reducing the magnet pull of the ledges as long as you don't have to be facing the ledge, Mario users would abuse that too much.
How is it dirty? No one's just going to stand there and wait for you to come back. It's like...me pressuring my opponent into a corner in a traditional fighting game like Street Fighter. Instead of continuing to put pressure on the opponent, I just back away and let him join me mid-screen to fight again. No man, that's not gonna fly.
Instead of relying on what the opponent can't do, learn certain things so that you won't be put into such bad positions. Learn howto DI properly, mix up your recovery patterns, space yourself in recovery so that if they attempt to strike you off stage you can either strike them first or put them into a risky position, sweet spot the ledge! Recovering is just as important as maintaining your position on stage.
As for the Mario thing, I'm a Mario user, and I rarely cape players unless I get a very hard read on where the opponent will come back. For example, I was playing a Meta Knight with my Mario and I noticed his tendency to shuttle loop me near the edge of the stage when do a Short hop Aerial or empty short hop for pressure, so when he grab the edge, he decided to short hop and air dodge to get back on safely, I knew he would shuttle loop to get out of a bad position, so I power-shielded it, jumped, caped him, and immediately grabbed the edge giving me a kill at 40%. The lengths players go through to get gimps are edge guard become much more difficult when you start reading players. COnversly, you can also punish edge guarders with your recovery. Just think outside the box.