Pictures please

I think the crisp muslin is pretty. Computer monitors don't always translate color well. I have similar tone cabinets and my paint is a light creamy beige - lighter then your present color - just enough color to set off my white trim, but not too much contrast - a look similar to the Crisp Muslin. I am seeing a lot of warm woods mixed with creams and whites in newer design pics.

No, we didn't choose Iona, wechose Vesta as I changed the color of the shower/backsplash tile to Architectural Gray from Daltile https://www.daltile.com/product/Color-Wheel-Collection-Classic?color=Matte-Architectural-Gray&shape=Rectangle https://coretecfloors.com/en-us/products/coretec-stone/vesta-vv568-18363 We're quite happy with the Coretech! A neighbor came to see our bathrooms and commented "it's warm (in stocking feet)" perhaps in comparison to a stone tile which would feel colder. DH installed it and used the Coretech transition for the primary bath, but we had a wood transition that was glued down for the hall bath so I asked him to cut it at a 45 degree angle and I think it looks wonderful! Our bathrooms are small so with this large of a tile there were few that he didn't have to cut. hall bath transition, tile cut to 45 degree hall bath, natural light from skylight in bath hall bath from bathtub, hall weaving is from Huatulco, MX https://www.google.com/search?q=huatulco+mexico+weaving&sxsrf=ALeKk012mrZxsoP1y_9ZS2b20CuGP_Fwdg:1614037566839&tbm=isch&source=iu&ictx=1&fir=kgeDyTPUDQUuHM%252C48IRYwsqKt_SVM%252C_&vet=1&usg=AI4_-kQWJyN6535gYFKBUpZ3mYgwsYj4DQ&sa=X&ved=2ahUKEwjq_My-1v7uAhXCv54KHa1aDqcQ9QF6BAgJEAE#imgrc=kgeDyTPUDQUuHM primary bath with vanity light on Coretech transition, color is Vesta

If your goal is to lighten up the house, avoid adding dark things to the already dark rooms. Add lighting, remove heavy dark window coverings, and check outside to see if there are branches that have grown to block sunlight from the windows. Pruning at the right time of year for your area can let in much needed light again. Start by replacing the light fixtures to improve the overall "dark and brown" look. Remove the over-sink bar cabinets. Paint the walls. Staining the cabinets can't be done well without stripping them, sanding, filling, staining, sanding, and so on. Contact the cabinet company with photos of the damaged areas. Ask them what clear coat can be applied over the existing finish. Chances are good that a clear polyurethane over a bit of stain pen will fix up those worn areas easily.