Nice! avoiding recessed lights is a great idea. The Brightgreen website is a great resource. You can calculate the amount of light required for each space by changing beam angles, ceiling heights and color temperature. The calculator isn't set up for wall scones however the same rules apply. Ceiling mounted lights are also a great alternative to wall scones. Hope this helps. https://brightgreen.com/led-lights/d900.sh-curve-downlight 

As I was using the same tiles, vanities etc and tradesmen at the same for both the bathrooms downstairs, it helped reduce the cost. I would say roughly $15,000 per bathroom and that also included getting the expensive Italian feature tiles and the scones/ wall lights weren't cheap either. If you design cleverly, you can purchase most items at a good price, then shell out a bit for the wow factor pieces!

1 -- leave the existing lights , or maybe go bigger but in a similar style . I like those string ball ones -- you could possibly even have some fun and go for a bold colour , depending on the rest of your house . 2 -- wallpaper the feature wall in an 'interesting' burgundy or even reddish/pink pattern , maybe some scrolls or maybe with a fine gold stripe embedded . 3 -- if you want to stay white or any of the 19472 variations through to beige , add a large colourful abstract painting -- at least 1.5metres x 1.2 . 4 -- that 'roof step' where 1 of the lights is looks out of place -- I'd paint the 2 sides in a charcoal/real deep steel blue ( darker than the carpet but still showing some homage to it ) . I doubt it would darken the stairwell too much , but it would look more balanced and cohesive . The bricks are 'interesting' and doing anything with them could be tacky IMO , the stairs and floors are fine as you have worked out , it just needs a feature wall or focus .

I just finished our new ensuite, which has a 1600mm vanity. I have 4 lighting circuits (switches): 1. 2 x downlights for the main bathroom in a similar place to you. 2. Another 2 x downlights ( 1 over each sink) 250mm off the wall (vanity is 500mm deep so halfway between person and mirror). 3. Extractor Fan / Heat Lamp and 4. Strip light under vanity for late night trips. The downlights are dimmable so you can have the main bathroom in a medium light and then you can choose how much to crank your vanity lights. The idea is that the light should shine onto your face hence they are installed in front of the person and they are on a gimble so they can be tilted to point at your face. I think you are in Australia so I can tell you they are the Domus Aqua Tilt 13 and are fully sealed (ip65) so no issue having over your shower, etc. They are also very bright as the light bounces off the white tiles, so really they are only needed when applying makeup. It's hard to know exactly where your lighting needs to go when you just have plans in front of you, but you could always get your electrician to wire both for wall sconces and downlights and then when you are further along you can choose whether to cut downlights or have wall lights. (Remember to take pictures and measurements of the wire locations before they close in the walls / ceiling!) If you try downlights first, it's also a lot easier to change your mind (i.e patch a ceiling) than wall lights as that usually means drilling through tiles..