Zoomer 44, I believe Chelsea Flower Show is allowing gnomes in for the first time. I don't have either decking or a 'water feature'. As regards fashion, I don't read any gardening magazines or colour supplements, I just buy what I like. I sometimes go to gardening shows where you can learn what is currently available, but often they are sadly too large for my little plot.
The human ideal of beauty changes from decade to decade, so clothes from the eighties look a bit naff now and I guess gardens and interiors do the same. But with a very few tweaks a garden can be made to look up to date - if you want it to.
So my current theme is to de-clutter, have fairly clean lines but with loads of plants spilling over those parameters.