I don't have strong feelings one way or the other when it comes specifically to cosplay, but I definitely would like to see more outfits/costumes/cosplay in general that plays a larger role in the scene, or at least keeps getting worn for a bit longer and fits into a larger scene-by-scene plot/theme.
SLR Originals haven't been too big on cosplay/costumes so far, with some obvious exceptions like "Give the Devil his Dues", "Roomies from the Moon", and "Rabbit Hero Miruko". But I for one would totally dig seeing these types of themed scenes more often. They felt super original, and no one else is doing anything like it (except for arguably VRCosplay, which imho is not even close to the same level).
Right now looking back on their releases, I'd say SLR is hitting about 75% "standard sex scene" and 25% "creative/themed sex scene". And make no mistake, SLR is my #1 by quite a margin and I generally enjoy the majority of scenes released. But what I'm saying is that the "standard sex scene" is also being done by literally every other VR porn producer, specifically some of the other big names like Wankz/Badoink/CzechVR.
So yes: yes I would personally love to see more themed scenes, more costumes, more cosplay, whatever you'd like to call the combination that leads to more "new" and "original" scenes.