I wouldn’t have plastic grass - although I can understand if if you have young kids and a garden with no sun.
Hate loads of spotlights.
Really don’t like the look of solar panels, but would consider them on the back of the house.
No side-access would be a pain in the arse.
Hate front door opening straight into the sitting room - a tiny hallway would be fine, but I’d need something.
Biggest deal-breaker of all would probably be (at my age) no upstairs bathroom and no downstairs loo.
I love my kitchen island, but looking at it now it’s definitely (more than!) a bit of a dumping ground! I think that’s our fault rather than the island’s though as in our old house we dumped stuff on the end of the kitchen counter or on the dining table - you’re either a ‘dumper’ or not! We now have a very large kitchen and if we didn’t have an island there would be a lot of wasted space and a lot less storage as it has loads of pan drawers, etc, as well as a wine fridge. I also wasn’t keen to have wall cupboards, so we have a big corner larder and that’s it (I didn’t want it to look too ‘kitcheny’ as it’s a kitchen/diner - big dining table that seats 10 at a pinch at the other end and we entertain a fair amount). I wouldn’t sacrifice a dining table for an island though and I think it’s a bit daft to shoehorn them into a small kitchen, but each to their own.