Their scenes are more about intimitacy, as opposed to kinks. Vanilla to be sure, but it's more about the build up in compliation with the actual scene itself. It's more about 2 ppl connecting, rather than straight fucking, i think Eva made the right decision on keeping their scenes focused on that, as it falls in line with their relationship. I do however think that if they do get into more kinky things, it would be even better, because Eva's already laid the ground work, and now we would have a fusion of kinkiness and intimacy. Saying all that, it's probably not going to be to everyone's taste.
GGGB felt no ways about throwing Ash into depravity, lol.