You make a good point about the sabbath day being important still. A number of years ago I went along on an RV of this lady. Her house holder was a guy who happened to be an SDA. He argued that all 9 of the 10 commandments are still observed by Christians, why not the sabbath. I said that was a good point when the sister allowed me to interject. I was actually getting on his side to support his belief. I actually turned the topic upside down on the technicalities of the sabbath day.
The sabbath was God's rest day and the USA promotes a 2 day rest period for it's populous. I told him if we don't get a mental rest day between the weeks our brains turn to mush. He never thought God needed to rest when Genesis mentioned him resting on the seventh creative day. The point I was driving to him was that the sabbath was still in practice because it was a rest day for mind and body. Jesus said you could break it as long as you had extenuating circumstances. An employer that makes you work seven days in a crunch was one of them.
The other 9 commandments were straight forward but Jesus said the sabbath one could be more flexible.