At this point I can't ever see myself playing more than 10% of my games in standard. The tipping point was last night when I battled my friend who has a bigger collection than me; I'd guess I'm at maybe 65%, maybe, but honesty I have most of the cards that matter to me so I can make p much most non rogue decks. When my friend and I battle we just have fun, he was challenging me to standard games and I just questioned him; why? We invested so much time and money to get all these cards. So why would we just not use them when we play together (which is the time when I have the most fun playing)?
Standard is a great idea for "competitive" play in order to keep letting new people play the game, it's great for f2p players. But as someone with most of the cards I care about, I get way less fun out of it. Sure opponents can drop annoying cards but I have access to them as well.
The most fun I have in this game is making home brew decks, where I start off play games and then adjust accordingly as I see the weaknesses. Wild gives way way more opportunity to do that.
For instance my favorite decks right now are nzoth decks since I pulled him. It inspired me to make Hunter deathrattle decks, and after crafting princess Huey, I have the ability to make zoo/flood/deathrattle Hunter decks that are fun as hell. Using the stalker card I can make Nerubian eggs 1/3 in my hand, or use princess to pop one on the board, or use feign death to pop them, or use call of the wild to make them roar! It makes weird things like Hunter zoo have a place, where in standard it's much less viable bc of less options. That's freaking awesome. In standard, my creativity for using princess and such is super limited with the low amount of deathrattles, so why limit myself when having a huge bank of cards is so fun? Sure some cards are borderline "auto include", but if shredder and creeper enable decks that wouldn't work in standard like a Hunter zoo deck, why would I care? It leads to More overal options!
The nerfs balanced wild out a lot more than it was before them as well. Sure there will always be OP netdecks, but personally, the aspect of being able to have more options available means I'm wild at least for this year. Arena is wild as well and Playing mostly standard could really hinder me when playing arena cos u could forget about playing around certain cards. And honestly I hate the aspect of being in a standard game and thinking something like "wait, is imp gang boss legal, do I need to play around it?? I forget what pack it was in...", it makes more sense to me to play around all of the cards I know for less confusion.
Then again I'm not one to care about breaking the meta or making legend. I usually just make it somewhere in the 5-10 range, losing doesn't bother me if I get to have fun crafting new ideas. For instance the most fun I had in hs was taking an aggro priest archetype and getting it to rank 6 or 7. Wild gives way more opportunities for fun like that IMO