I think it somewhat depends on your space. For me, 10am is a bit too early to get up, do a quick breakfast, get packed and tidy up. Which would mean I would have to get packed the night before. If it’s a vacation spot, then that pretty much ruins my last night. For a business listing, not as big of an issue.
I cant help with the luggage thing as that’s not a common need in my space as this is mostly a drive to destination. I will say that one of the things that has stressed me out on my own travels, especially flying in to big cities, was how to deal with luggage when flights are such that I have free time to sightsee but don’t have my room to store my stuff. I remember a trip to London where I was almost in tears trying to make it to a meeting outside the city, but had no way to store luggage for a week long trip, so had to negotiate multiple trains during rush hour, tired from the overseas flight and worried I’d miss the appointment, etc. If I would have had a way to deal with that issue through my accommodations I’d have been a fan for life! I would have happily paid a luggage storage fee of some sort.
If you could come up with a way for your guests to store luggage without interfering with your turnover process it could be a big winner for your listing.