In my opinion, ultimately the whining on this japanese blanka page…is just that…whining. He is complaining about thinks that were never true (hk was likely always -10, and frankly, -8 vs -10, who gives a fuk?), or dont really matter.
Second, the change to slide, which this guy appears to again be whining about, is actually a buff, because of the reduction in recovery frames of the slide.
The only real important change is that ball appears to be grounded until the 8th frame or so. But frankly, other than against zangief, 720s, it doesnt really matter. Low attacks have always been good against ball, so the issue here seems to be moot.
The only really nerf that matters to blanka, since super, is the hop nerf. In super, hop was airborne after the first frame, now its around 4 or 5. Thats a huge difference, and really noticable, because its much easier for people to throw blanka out of the hop.
This is a drunk post…however, even if sober, I fully stand behind it.
Ves: Im pretty sure the crouch HP buff you are identifying actually occurred from SF4 to super. Since super, im pretty sure the crouch hp has been the same…in sf4 it was kinda ass.