Babylon is the biggest wildcard there is, followed by Olympia.
Most people prefer B side because it is less prone to hate drafting. Side A forces you into chaining 1 green, which is the easiest strat to block. B side allows for all plays, including a high resource strat most people ignore. However you are forced into a green play if you want to utilize your second stage.
Normally the last two cards of a stage are garbage - they passed through all other players and they did not get them. But your best bet is to be prepared to build them both. I personally best utilize a strategy with lots of resource cards and supplement with green or red depending on the situation.
I cannot pinpoint a decisive coherent strategy because your success is entirely dictated by the last 2 cards you get in a stage. You can (at best) try to take cards suggestively and predict what cards will be left for you in 5 or less players games where a set you have played will come back to you, but that is it.
Most people prefer B side because it is less prone to hate drafting. Side A forces you into chaining 1 green, which is the easiest strat to block. B side allows for all plays, including a high resource strat most people ignore. However you are forced into a green play if you want to utilize your second stage.
Normally the last two cards of a stage are garbage - they passed through all other players and they did not get them. But your best bet is to be prepared to build them both. I personally best utilize a strategy with lots of resource cards and supplement with green or red depending on the situation.
I cannot pinpoint a decisive coherent strategy because your success is entirely dictated by the last 2 cards you get in a stage. You can (at best) try to take cards suggestively and predict what cards will be left for you in 5 or less players games where a set you have played will come back to you, but that is it.