Next Expansion to be Announced March 11th!

[Deleted]

The way blizzard is releasing new expansion its going to be hard for them to keep every card relevant. i think some point this will catch up 2 them.
something like over 20% of the card so no use or something like that.

It's irrelevant when the cardbase grows bigger and you only have to tune standard format. They are doing things exactly the way MTG has done when they introduced standard. If you look at MTG nowadays, about 500-600 new cards every year (if you include commander sets etc.) and there's usually max 20-30 of those that are played in legacy when they rotate out. Those other 95% end up in the "10 cent per card" boxes in your local MTG shop and are only used in very specific decks or in themed decks (all angels, all slivers, etc.).

What they do have to look out for is that they don't introduce standard cards that will create a massive powercreep in the wild format. In case of MTG, they fixed this by having a banned list for legacy (you can't play those cards officialy in legacy) and a 'limited' list in the limited format (you can only play 1 of those cards in a deck instead of 4).
Blizzard might do something similiar. Or even just nerf the said cards, because that is after all possible with a digital format, as opposed to a printed format.

Having many nonviable cards doesn't matter as long as the pool of viable cards is big enough. And cards that are not viable now, might be viable later when they syergize with new cards coming out.

[FobManX]

People are always coming up with silly things like 20 mana combos instead of looking at the playing field. With the nerfs to combo(and Zoo was already favored against Druids) and the deletion(in standard) of many cards that made other top decks work, I fully expect the standard meta to be Zoolock dominated. The hero power is just too strong, and there's been no hint from Blizzard that they're considering changing it.

Meanwhile, Rogue is losing Belchers/Healbots/Oil and are going to be horribly reliant on Poison+ Blade Flurry or its gg at turn 6.

Yep. Every expansion people come up with some crazy combo deck that requires a zillion different things to go right to pull off. Meanwhile the meta will still be infested with aggro face decks and you'll be dead by turn 6.

With standard of course you'll see a different meta with so many popular cards being disallowed, but like I say every expac for the most part you'll see the same decks do well with some slight variations. Unless of course they end up nerfing a lot of the really strong classic cards as well.

[Simulacrum]

Well, the game needs to have a lot of those decks that kill you by turn 6, otherwise it'd be nothing but OTK decks that destroy you from an empty board on turn 12 or something.