For being at the biggest possible standard card pool, the difference in power between standard and wild has never been bigger. Standard does seem healthier right now, as Wild decks all abuse absolutely broken combos and synergies to have a chance.
That being said, I am not sure if it is the best ever in terms of diversity, and some 0-cost combos are really annoying even in Standard.
Im playing mostly wild. Since i reached legend one year ago i only go to rank 5 every month...so cant tell how it looks further. But imo its pretty well balanced. I meet almost all classes regularly besides maybe druid & rogues.
Druids - Aggro, Embiggen, Jade
Mage- Time Warp, Secret
Priest - Ressurrect, Quest
Warrior - Bomb/Gala, Pirate
Warlock - Egg, Mechathun, Demon
Shaman - Even, Quest
Rogue - not really..sometimes mill
Hunter - Mech
Paladin - Mech
The most annoying deck to play against is secret mage. Also Mech Pala can be pretty unfair. Since you mentioned broken combso...the time warp combo with Archmage Vargoth is retarded :(
Im playing a HL Mage and its a lot of fun. Atm at rank 4.
Standard often feeld unfair for me, when i lose to a certain situation and i know there is a tech card against it but not available in standard.
Anyway...im glad i see posts about a "healthy" meta. :)