Infernape isn't that great against Blissey. I've played games where they do T2 90 and still lose, because the attack is expensive and doesn't one hit anything until the LV.X comes up. With the primary DRE search rotated (Lass), it's too hard to find them on a consistent basis.
Sableye is annoying, but not nearly as devastating as some of you make it out to be. It can sit there and do 10 (nothing, if you have a Drake's in play) for a little bit, but even WITHOUT WP, you can retreat out of it; I actually did this at my last BR. Retreat, Boost, and do 90 for the KO.
Meganium doesn't do much either, from my experience. The only rated game I've lost to a Meganium deck was Meganium/Machamp, and I was T2d in one of the games (it was a top cut match). I've beaten MegaGatr and Meganium/Flygon without too much trouble.
Mismagius is a nice idea, but just doesn't deliver, especially if they play FF/Fighting, which Delcatty/Solo lists should if fighting resistance is a worry.
Also, Blissvire and Bliss/Lucario don't need to use Holon Energy as much as the others do. Admittedly, Blissvire has the worst Fighting matchup against them all, but it doesn't equal an autoloss. I played in one BR with Blissvire, in which I went 5-1 against fighting decks. Pure speed (no, Blissvire is NOT slow, contrary to what many people seem to think) generally outdoes most fighting stuff, and Electivire LV.X gives you outs against Cessation, which most fighting decks play. Lucario gives you an alternate type, so weakness isn't as much of a problem with that variant.