There was no way to reply to other thread so I guess I'll post here.. Sry if in the wrong place.. I R Noob...
Personally my top 5 would be:
1. The ability to save multiple decks.
2. The ability for you or your opponent to resign in PvP without the computer taking over... put in a timer or round counter to eliminate abuse.
3. Match play... i.e best of 3 to lessen the impact of bad draws OR In lieu of match play a mulligan could be implemented for bad draws at a cost... i.e. 1 less card or loss of xx life.
4. A card trading system... Although then people will be buying and reselling for profit unless you anonymize the trades.
5. Friend List
Several of these and other feature requests could be implemented as Premium features creating income for the makers and guarantee longevity as well as server stability and additional funds for game development.
just my .02
sorry to rain on your parade but...:
1. Zanz has completely rejected multiple decks many times as it takes to much space to save them
2. then the PvP would have issues.... people would just quit if they knew they were going to lose (like on their last go) so the other player who should have won will recieve nothing at all.... this will most likely never happen
3. auto-mulligan happens already, if you cannot play a single card of the 7 straight away (that have a cost of 0 - pillars/photon/immolation/nova etc) then you redraw 7 cards without even knowing it, but beware this only happens once so you might still have a super bad hand (i.e. no pillars)
4. Zanz said no trading between players as the idea of the game is to win cards/electrum to buy cards, and trading will allow new accounts to be able to easily beat AI5 or something so skipping the quests and what-not... this will never happen
5. maybe you could convince zanz to add this, but i see no reason for it... if you want to see if someone is online then just use the elements chat, that is quite relliable....