I very much prefer 1 on 1 scenes, dont get me wrong I like the occasional 3/4-some that we've had but if they start becoming too frequent in the future i feel they begin to feel a bit annoying and unnecessary, kinda like with the recent Bailey scene. Jamie and Shauna did not need to be there at all, they added nothing and i feel they took away some of the intimacy that would have otherwise been there if it were only Bailey and MC so its nice that its getting reworked a bit.
I also totally agree that a girls first time with the MC should always be 1 on 1 with certain exceptions like Rainn for example, I dont think it would make sense for Rainns first scene to be without Bailey present but if we look at someone like Nat or Stacy I feel it would remove the special feeling if their literal first time and their first full blown lewd scene is reduced to them just being part of a group instead of an intimate 1 on 1 scene.
Lastly I feel that group scenes need to be with people who complement each other like the Zoe, Bailey and Liz foursome, all 3 are cheerleaders and interact with each other daily and have a fairly close bond especially Bailey and Zoe, but if you took a combination of let's say Jamie, Bailey and Vanessa then i just dont see how that would work in anyway, it would feel totally out of place to me.