New Katarina Wall-hop strat
The reworked Katarina is losing her ability to ward-hop, so this will limit her ability to hop over walls at will, but it is not impossible.
Instead of placing a ward then using her E, Shunpo, onto the ward, now you have to use her Q onto a target that is near your side of a wall.
Her blade will always bounce and land on the opposite side of your initial target.
After it lands, you Shunpo to it.
There are of course only certain places where this will work, but I would imagine that it works in pretty much every place where Yasuo is able to dash over terrain, and it may even be a little more forgiving.