I mean, none of these things you're mentioning are comedic in nature, which I think is what Reynolds excels with. I think there's definitely more room for comedic moments in a Star Wars setting. Especially if you get away from the political and societal drama.
In fact, I'd say it's a very good way to expand the Star Wars universe in a much more down to earth (so to speak) way. Focus on something or somewhere that isn't intrinsically linked to the big players, kind of like how the first Deadpool movie dealt with much more personal issues and really only had bit players from elsewhere in the X-Men/Marvel universe.
It doesn't need to be, but it doesn't need not to be either.
These discussions always seem to lean towards extremes, either it has to be one way or it has to be another. Saying something can't be R-rated is as much of a restriction as making something intended to be R-rated. It's more important to consider the content itself rather than it's hypothetical rating.
R-rated content in the Star Wars universe could work, just like PG-13 or below content can and does work. Not because of the rating, but because of the quality of the content itself.