The meat-based full-English seems to be enjoyed by most people whatever the quality. I like either a vegan or vegetarian version, but the quality and variety has to go up a notch to be worthwhile.
Maybe a selection from scrambled eggs or scrambled tofu (vegan), poached eggs, good vegan bacon/sausages, roasted vine tomatoes, sliced gently cooked mushrooms - butter absolutely needed imo, home-made baked beans, grilled halloumi, avocado, fresh spinach, fried potatoes, bubble and squeak, potato cakes, soda farl, staffordshire oatcake, wholemeal toast. HP SAUCE!
It's a feast and should feel like one!
Abominations - hash brown, tinned tomatoes, hotel half tomatoes not grilled enough, whole mushrooms grilled without butter/oil - soggy and chewy!