I've laid out the idea already, but I'm sure EA will continue to chase the CoD mentality of making the game only fun for turbo-sweats.
Like you, I suggested the additional movement step between sliding and jumping. I also suggested a movement lock while sliding of 180 degrees, meaning you would only be able to look 90 degrees left or right while sliding and not spin a 360. I also suggesting drastically lowering the distance you slide, so that players aren't skidding 30 feet every time they slide. I've since also thought they should limit firing to require the handstop attachment. In fact, I'd place that requirement to a lot of instances such as vaulting or diving.
I also explained to them that the "bug" they "fixed" that "limited player speed while hopping" in fact WASN'T a bug and is how the game is supposed to play. They ADDED that speed reduction in Battlefield 4 because of players abusing bunnyhopping. Amazing how they don't see the problem now.