You are not getting a premium experience anymore. ... For the past few years, service has declined little by little.
Again, I disagree with you completely. And that's ok. Subjectivity and all.
In WDW we've stayed at: Caribbean Beach back in 1994, then over the last 11yrs... Contemporary, BLT, BCV, BWV, SSR and VWL. So resort-wise, these are the only ones I can speak to. Had one room not up to our standards at BCV once (cleanliness and odor issues) -- demanded a room change and got it.
Just spent 11 nights at BLT and was greeted by all new upholstery throughout - gorgeous! Room in impeccable condition.
Had great service throughout our vacation. Our friend on his first trip to WDW was very impressed. And we HAVE NOT sensed the decline that some here describe. That has just not been our experience.
You mention it no longer being a "premium" experience... For context about us as travelers, we feel extremely fortunate to have the option to stay at some beautiful hotels. When we go to NYC we like The London best. In Montreal just stayed at Le Saint-Sulpice. In Paris we liked Le Meurice. Have stayed at Four Seasons in Georgetown in DC. Many other lovely hotels.
Is service at BLT "equal" to Four Seasons in all respects? No. It's also less expensive -- so that makes sense. The biggest place I've noticed a difference btwn these two is when something goes wrong with the room/stay -- how quickly management resolves it and how they strive to make up for it.
However, when in WDW, I'd rather "stay in the magic" at BLT -- to not leave that unique WDW environment for our whole stay. THAT has value to us that Four Seasons or the like can't offer.
And again... this is ALL subjective!!