Wait whoa Solgaleo hardly saw the light of day and topped with Lurantis once sometime and Metagross made one surprise appearance - these are hardly decks I can call top-tier from the last few months. No way. I'll concede that Healing 30 isn't as good as it used to be - Zoroark hits way too hard, Drampa smacks for 150, Garb can hit for ridiculous numbers, the list goes on. Healing 30, however, is better than having Silent Lab for...what? The Giratina that doesn't see play? The Lele? The Shaymin? Ok, the latter two are more understandable, but counter-Stadiums are seen in every meta deck - Team Magma's Secret Base, Brooklet Hill, etc. etc. You won't reap the benefits of Lab if they just bump it.
Latte covered your second point.
Lapras had the limelight for a blip of the middle of the season when it won that one Regionals. That was it. Greninja didn't win anything. Ninetales hasn't won anything, but I will agree that she is the current #1 for Water-based decks. This discussion is slowly transitioning into debating the seal Water has stamped on this season, so I won't go any further with much detail. Personally, Water/Ninetales was above-average at best, but not nearly as ground-breaking as Garbodor or Zoroark/Drampa. Heck, Water probably wasn't as meta-changing as Yveltal/Garb when that dominated the first half of the season lol