Keeper of The Spirits said:
Yeah in 10 years it certainly won't be on trend, so classic may still work, but still will probably need some polish
It's ok to buy things for your house because you like them and not just for ROI
This.
Do it for you now. We did our master 10 years ago and I'm thinking about some minor updates soon, mainly backsplash/paint type of stuff, but to sell that would definitely help already.
Overall, it really depends on where you are coming from. Ours was a 1970s original. We added some square footage along with complete gut. Definitely added more value than I put into it but have no plans to sell in any time period right now.
That will differ in value add from an 2000s house with base finishes.