I love what you've chosen. My only concern is that the overall effect could be a bit cold without some wood or warmer tones (gold? brass?) to balance all the puple/blue and chrome. [https://www.houzz.com/products/glam-dining-table-prvw-vr~78853891[(https://www.houzz.com/products/glam-dining-table-prvw-vr~78853891) http://www.modernfurniturecanada.ca/fan-dining-table-chrome-p-34841.html http://stores.advancedinteriordesigns.com/ross-round-coffee-table-white-lacquer/ https://www.pamono.com/round-glass-and-chrome-coffee-table-from-pieff-1960s http://brickellcollection.com/product/concrete-chrome-coffee-table/ https://www.decorpad.com/bookmark.htm?bookmarkId=54434 I love these, but they are vintage (and everything similar I could find was also vintage). Also the wrong color, but I love the style. These are either Milo Braughman or in his style. https://www.pamono.com/french-chrome-bar-stools-by-maison-jansen-1980s-set-of-2-1

You had a lot of wasted space the other way as well, truly you should add a chair to the other side. Because this looks amazing. you could make the chaise side longer now. The arcade games feel like part of the flow rather than baby in the corner. the room is rounded out. Dont be discouraged. lets see what some others think, i think its a vast improvement and seems much more cozy and inviting than before.

It looks amazing already, it really does!!! In front of the radiator you can do a bench. But other than that leave it empty. Add some art that speaks to you. What do you like? Big family photo? A painting? Maybe just a mural art with molding around it to frame it out... so many options. I’d also add some new pillows with more color. Black, Blue, brown leather....

I think the most cohesive thing would be to repeat the tile you have, or do the blue. I've been collecting a lot of ideas for kitchens, and you want it to be cohesive, but what you like. I don't think adding another element, like the cork (wrong tone) or wallpaper will give a cohesive look to your new, beautiful kitchen. Shelves in front of the tile, or the suggestion of 3m hangers, or even thin wire with lights they have these days, can make your kids art shine and feel special. Don't listen to others who say not to hang it. If you keep it from looking cluttered and you all like it, then ignore everyone else. They grow up fast!