There’s a thread in the game’s general discussion which has effectively turned into this, or is at the very least a list of persons guaranteed to either a) not take days to take their turn or b)not abandon games to the 4-day limit.
That being said, I don’t think the game should effectively let chronic "forfeit"ers get off scot-free. It’s a tricky proposition, and every idea I think up has its own set of flaws, but for every game that’s abandoned, maybe there’s another two that they win - sure, they lose out on the loser’s pot had they completed the match, and sure that adds up, but nothing is there to say “this is really unsporting, what you’re doing here”. I’ve challenged a fair share of beginners that match themselves into 26-point games (and even some mid-level, decent players) to 14-point (or 20-point) games where we are more or less on strategically even ground, but after a good two-thirds of them went to idle after the third or fourth turn under two hours’ play, I just stopped doing that altogether.
I can’t say the game can be too much at fault for this, it does everything it can to make losing tolerable. It even gives you tips on who your weakest link is, whether or not you have enough points for the match, or who you needed to look out for on the battlefield (though that gets a little silly sometimes- my medic was my lowest damage dealer? The one with the little stabby knife? Golly!). I just can’t think of an entirely rigid way to discourage that kind of behaviour without catching up a few well-meaning sorts in it.