For me, hotel architecture (exterior in particular) is of paramount importance because it was able to distinguish the entirety of WDW as something apart from today's norm (with Downtown Orlando, I-4 or the Lake Buena Vista Official Hotels offering perfect examples of the norm).
BLT tower was the beginning of the loss of this uniqueness, which is now accelerating to a nightmarish degree under Chapek & Iger. Some have noted, "I don't care what a building looks like, as long as the room's nice and it gives me a great view." Maybe if it were off in some distant corner of the World. But as it stands, these things going up in highly visible prime locations is like someone building a really badly-designed, ill-fitting condo in previously-pristine or historic place (e.g. Venice or Nantucket Town) affording themselves nice views of the beauty that was previously well-stewarded, while costing everyone else the same... and beginning a domino effect that leads to the end of the beauty that lured the development in the first place.
It could have been a win-win had there been executives and designers in place with a modicum of vision and knowledge. Footprint and floor-count don't necessitate a bland, every-day, degraded piece of architecture (although that's what we end up in 95% of cases around the world).
Here's a couple hotels from the actual Riviera that might be one of numerous archetypes that could have inspired Disney to build a resort themed to the Golden Age of European Travel:
While places like the Wilderness Lodge or Grand Floridian or Beach Club did an admirable (not perfect, but probably best-in-class) job of evoking that lost, romantic age of grand hotels, why could this Riviera, architecturally, not have strove for the same? Instead it is an ugly and inept looking building (went downhill from the first very bland rendering) - the shutters presence alone show the degree of cluelessness.
I'm not a big fan of the kitschy tower-portions of themed resorts in Macau (example below) and Vegas, but AT LEAST - at ground level - the designers and developers study and go for the architectural aspects that define a historic style (Beaux-Arts in this case). With Riviera, they couldn't have been cheaper or more lazy in this respect - like what you'd expect from an average (average = awful when compared traditional design standards) local condo development. I will take a pic of a nearby above-average condos that have much better application of traditional, historic elements than the "themed" Riviera.
Again, when a company tries to design something to evoke European resorts of old:
And former-themed-resort-hotel-leader-and-massively-profitable DisneyCo's effort at something similar: