I think painting the walls lighter and brighter is the right move but don't be restricted to white necessarily - although that would be the safe option and you know for sure it would work! You could introduce a contrasting colour on the ceiling if the walls were white obviously dependent on your furnishings and other colour choices. How about a soft grey or "greige" as an alternative to the white? Finally, you could introduce a dado rail at approx 1m from the floor - painted white the same as cornice and ceiling and then paint the upper and lower sections in contrasting colours of say charcoal on the base and white above or 2 shades of the same colour.

I like the bricks and their texture My advise : fill the gaps in the bricks with more mortar use either white or natural in colour keeping the lines as straight an even as possible I think I was on the boral website the other day and they had a link where you could play around with different cladding and mortar Paint the beams in with the ceiling and add as much white/China white/antique white paint as possible Alternatively go to Pinterest search colour palettes or colour combinations You will definitely find some unreal colour ideas there Libby rip out the carpet and see what's underneath if concrete get it polished if timber do the same

I think white walls would make the jarrah a feature, maybe antique white

I'd be inclined to move couch & armchair along wall with large recess if they will both fit. Mount TV onto flat wall opposite. You could have a low unit to house electronics, or use the one you have. Have purpose-built storage cabinet w/shelving built into smaller recess. Some of the shelving portion could be backed w/mirror to help throw light into room. Use the shelves for books, objects of art, photos etc., and the drawers or cabinet below to store things you don't want on show all the time. I also think a large area rug will ground the family room area from dining/kitchen. A neutral one perhaps or you can inject some colour. Large art pieces on wall as mentioned. A largish plant in a raised pot would add some greenery. You may find you need a floor lamp near couch & chair. Regarding the kitchen, I think you might be able to fit a narrow timber sideboard at end of island bench so you have some additional storage there. I say timber because it would warm up the coolness of kitchen. I agree undercabinet lights good idea for additional task lighting. You could either go mirror backsplash or some gorgeous tiles. As there are a several changes you want to achieve in this space, it might help to do it in stages. Storage seems to be a priority (fam rm & kitchen) and rearrangement of furniture & TV. I would tackle this first. Additional decor ie rug, art pieces on wall(s) could be addressed next. Then splashback and some additional lighting if budget allows.