I like that too, because there are potentially a lot of ways to do it. On the one hand, this could be a very diplomacy heavy game, probably with a need to be tech leader to buy peace deals, which goes nicely with the tech goals (if those end up staying). Alternatively, it could mean getting directly involved to defend smaller civs, or to reconquer conquered territory to gift back or release as independents. It also does not rule out more direct involvement. The player could opt to directly conquer Europe to pre-empt continental powers, but they would need to balance the expansion instability from that and the required colonies. Could also go for a vassal game instead, with the nice bonus that vassals collapsing would not instantly make you lose, it would just open those areas up to conquest by others. This has a lot of potential.