I like deck builder games. I own several such as Clank, 7 wonders, Dominion, etc. This game really misses the mark and that's a shame being it's one of your big selling points for this new chapter. Like other people have posted here I have my ideas for how to fix this. It will change this from a game of chance to a game of skill and could speed things up, so every game isn't so slow.
Players take simultaneous turns and get the opportunity to buy the same cards from the tavern. the turn time limit is set to 30 seconds, and you don't get see what your opponent did until on your next turn. you still have the option to signal the end of your turn early and when both players do this it starts the next turn. You don't get to see how much power they generated on their turn only prestige, agents, and leftover coin they have at the beginning of the next turn. give them a 3 second timer to begin the next turn and remove the leftover coin when the turn starts. the
game would be to 40 prestige still with whoever has the higher score winning. the tie breaker being who had more money from the last turn.