You should consider the ensmisted lifespan of the game after its relesed. In my opinion "completing" this game takes years, by these standards.
You should adjust the booster income curve to more frequent, than right now to new players (taking into account how many players gona get their stuff reset before live so all of us gona be new players). And lower it as a player progresses.
It could be done by increasing the number of achievements. (add ones for completing pve maps for the first time on difficulties, first time experts should reward a booster, others bfp, add some pvp first timers etc.) And lower the income from daily quests. Also lower gold rewards from RPVE.
This would yield to a faster start but after that it would take more time to complete decks than right now. So players can get the hang of the game and got hooked into it.