- Cheaper game and better dust economics.
- Epics would have the same rule as legendary card do.
- Getting cosmetic details for like doing something that you actually need to spend a lot of time on. (Something similar as golden heroes with 500 wins)
- "Weekly" adventure challenges that would be from the older adventures and would garant you something like 2 golden cards. (Rare/Common cuz Epic and Legendary would ruin the dust economy.)
- Better collection and quest sorting as "Hearthstone Mathematics" showed us on their channel and more like changing position of your decks, button to copy your deck code to get quicker acess of your deck for your friends - also for mobile players, better searching bar cuz now you can´t find like "taunt + deathrattle". ( Click here + Click here)
- Achievements!!! -> Even a little ones that would be about clicking like 10 times on rastakhan´s board on the "pyramid" or something similar.
- Hidden not hidden "reward cards" the same as it was in the past with like Old Murk Eye but with a lot more rewards.
- Better reward system for ladder cuz you don´t even have a motivation to play.
- Older cardbacks and skins and also doing a little story animations they did for them in the past. ( Click here )
- Something like older adventures cuz I really enjoyed them the most of all PVE adventures now around.
- Buffing cards that didn´t ever see any play just a little bit like Bestial Wrath , Illidan Stormrage and more so if you open them you aren´t that sad as a new player cuz you opened something not "metabreaking" but decent.
- Nerfing cards in wild/standard that are popular and unfun to play against - Barnes, Kingsbane, Aluneth, Jade Idol. (It´s always sad to lose just because one topdeck like I mentioned.)
- Better and detailed informations about patches/expansions/updates. (There is every time something new that wasn´t on the list like "Jaina nerf" and more that we need to discover, that shouldn´t be even a thing!)
- Tournament mode and maybe even new mode.
- Both rewards for wild and standard ladder. (Maybe also something for tryharding arena)
- Autosquelch for tilting players.
- More events like we saw with Hakkar cardback.
- More statistics of your account.
- More rewards for achieving goals with your hero/account/collection.
- Being able to buy older expansions/adventures from wild via in-game shop.
- Being able to buy older adventures more times but you would need to complete them again and also complete heroic to get the cardback. (Or make events to complete your collection in wild - like "The Goblins Week" which you would have to complete something like "win 10 games in wild to get GVG pack")
- And as my last thing would be Underwater expansion with Atlantida theme but with wow/hs characters.
I´m really sorry If my intentions are bad or not the same as yours, have a good day/night everyone!
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i dont think Khadgar+ Frost Lich Jaina works how you think it does, Khadgar's text says only cards so Jaina's hero power summons only one water elemental