No chance for a save anywhere, sorry
If you mean "No chance to save anywhere you want, any time you want", that's one thing. I can live with it, even though it's a basic feature of pretty much every non-MMO and I find it hard to understand how it wasn't implemented from the start.
If you mean "No chance to save will be implemented" - that's ridiculous. With longer games now becoming a possibility, the minimum
that is required is at least a Waypoint save as in the Campaign game. Otherwise you're pretty much dependent on all players being fully available for the full duration, none of them crashing, none of them getting disconnected, none of them being interrupted by kids/partner or maybe the need to go to bed...