It's not that bad. Just make the following changes to the default settings:
- Switch from Sleep to Hibernate when on battery for the power button and closing the lid
- Hibernate after 5 minutes of Sleep when on battery (the default is 120 minutes).
Well, only problem is I like to use my SP4 (previously my SP3) like I do my iPad on occasion--lots of in-and-out as I'm doing other things (e.g., watching TV). That relies on instant-on; waiting for waking from hibernate is far from optimal. But I understand that Skylake is having general sleep state issues, so it might not be an SP4-specific problem.
But, yes, not the worst thing in the world, just reduces the convenience a bit when using it as a tablet. Not nearly so important when using it as a notebook, which is usually longer working sessions with less concern about sleep.