Everyone will have different views, so the important thing is that you do what suits you and your household (and your budget!).
We had an extension built last year, with a new kitchen/diner, and I researched long and hard about what I wanted for my budget. I spent a lot of time on MN for advice/ideas. As a result, we have the kitchen that works for our family. We also thought about how we used other areas of our house as well. EG I really don't like tiles in kitchens, as I think they look grubby very quickly. But I couldn't see how we could avoid having them behind the sink because of splashing (hob not an issue as it is in the island/peninsular thingy). The our kitchen designer pointed out the bleeding obvious, which is that most washing up goes in the dishwasher and the baking trays, big saucepans etc that don't can be washed up in the utility room. Genius! So our kitchen tap and sink gets used for prepping veg and filling the kettle, the kitchen is streamlined and there are no splashmarks.
Also, we were on a limited budget and limited kitchen area space, as I wanted to use most of the new room for dining/living area. Some things take up a lot of room but aren't used very often, eg huge Le Cresuet casserole dishes. These have been relegated to the utility room and garage freeing up space in the kitchen.
Personally, I hate range cookers and was very happy to get rid of mine and have a built in double oven and separate hob instead. Other people swear by range cookers because of the extra oven space. You need to think about what works best for you.
One thing I did learn is that the prices in kitchen showrooms bear no resemblance to the actual price you pay. I think our kitchen would have been over 2.5 times the price if I had agreed to pay the full price.
I love my kitchen, it works brilliantly for me. It wouldn't necessarily be someone else's choice though.