I wonder why they did this? Particularly the floor. They have created a really nice trip hazard. Was the sub floor not level? I think you have limited options to fix this. You don't want to increase your entire floor level to match it. You will likely need to remove and re-install the stackers. I guess it will depend on the architectural detail on your plans, as to who pays for this. I think paint will resolve problem 1.

just realised that my suggestion has overlapped with Dr Retro and i agree that you should be able to have (from left to right) a 900 wall cabinet with three equal doors, a 900 wall cabinet with the 900 wide rangehood and three equal doors and a 600 wide wall cabinet with three equal doors ie 8 x 300 wide doors with the left hand side of the range hood wall cabinets lined up with the 900 corner cabinet BUT is there any special reason why the wall cabinet for the rangehood was suggested as 1000 wide?? if so, the same concept applies ie left hand wall cabinet would be 850 wide with three equal doors, 1000 wide range hood cabinet with three equal doors, right hand cabinet 550 wide with two equal doors..ie 5 doors about 270 wide and 3 doors about 330 wide above the rangehood but aim for the 8 x 300 doors.. the cabinet maker should allow for all the necessary clearances and fillers to create a uniform appearance

There are indeed building code safety requirements that govern the design of balustrades, including the gaps around panels. Sometimes compliant gaps at the maximum opening look a bit off. I find that smaller gaps, 20 - 50 mm often look more pleasing. You say your patio is not covered. In that case there is little potential for any balustrade to trap heat. An uncovered north facing tiled patio will be a heat sink, and a glass (or substantially open) balustrade will allow more sunlight onto the tiles which will increase heat gain. A solid balustrade may reduce that heat gain due to it's shading potential, but I am guessing you want glass for the view, so if heat is a problem, consider adding a roof covering to shade the patio.

I would like to reduce the width anywhere from 80' - 90'. The land is completely flat. We have a lot on the corner, so the main roads would be on the right and bottom. I picked this layout because I liked the privacy it gave our (to be put in) pool. There are existing neighbors on the left and soon to be neighbors behind us. We have a large family so I want to keep all of the house space/ bedrooms etc. Ideally I would want to move the 3 car garage somewhere behind master suite (not sure at which angle). I just don't know how to completely flip the right side of the house and still make it work, because I like the idea of having the master suite able to walk right out to the pool. @oklouise @Black Bamboo @dreamer @Kate @User