Suggestion on incentivizing activity

So an idea I had recently on incentivizing activity is that there can be some maps where there is a gold cost to get in, and that gold cost isn't refunded until you win/lose. You can also add a gold prize in these games for simply staying active until you win/lose to not only punish people for becoming inactive but rewarding them for being active. This doesn't have to be on all maps, as maybe some people wouldn't have the initial funds, or they know they're prone to not finishing games, but I think it'd be better, as the people who are more likely to want games with active players will be more attracted to these maps, which will make it more likely that the map will have active players.

There are also some times when someone can be defeated, but maybe have random land in some random island, so there might be exclusions maybe if the player has something like less than 10 units or 3 cities, or all their cities are located in hard to get areas where they'll still recuperate their initial "collateral". Although even if this last part isn't possible to implement, I'd rather have a good system instead of a perfect system.

What are everyone's thoughts?