I hope you can work things out, they look like great scenes
I may just redo the ones that looked strange to me and add it back in there since I'm doing a 69 scene anyway. The overhead shots from MC's viewpoint just looked really odd to me. It seemed questionable to take things that far but they have had a LOT to drink by that point. Maybe I'll add it back as basically the "ultimate" vanilla finale option. Regardless, there will DEFINITELY be scenes along those lines in the Spa.
MC won't be fucking Christine there but he'll be able to fuck both Jess and Sonya and I definitely plan on adding very explicit threesome options there. I will probably make some creative use of the blindfolds to involve Christine as much as possible in those as well without her knowing for sure that MC is fucking Jess again (depending on your choices of course).
I'm planning to do a no holds barred threesome with Sonya + Jess + MC at the massage tables while Christine sits in the sauna. That scene where the vanilla game hints that you might get caught while spanking Jess after Christine went to the sauna... Well, Sonya is going to be the one who catches them.
I'm also planning on plenty of "happy ending" action that includes Christine after they all finish their sauna scene. So if you don't fuck Jess at the spa you'll miss out on most of my best scenes for my expansion there when I get done with it. I will do some stuff that doesn't require you to fuck Jess as well, but won't be able to take it quite as far. If you choose not to fuck Jess OR Sonya then you'll still get an extended scene with Christine but you'll miss basically all of the rest. The spa is not even started yet though and will take quite awhile.
I will also definitely do some no holds barred threesomes that include Christine after she fucks MC in the vanilla game but that will come after the yacht (or maybe during, but rendering on the yacht is problematic for me, it's a huge memory hog).