Do you think its possible for a West Coast Disneylander to view MK objectively?
Potentially, but don't ask me to do it.

Hard for me to judge MK on its own merits when nearly everything MK does is done better at Disneyland (save for the fireworks, but even then WJ is neck and neck with HEA!). I could plan a WDW vacation today, only plan EPCOT and DAK (never touching MK or DHS) and I'd be very pleased with that trip.
At the same time, I'm also not sure if removing DLR would dramatically change my rankings all that much. EPCOT and DAK still appeal to me more with their core themes and experiences than MK or DHS, and I think that would be exacerbated if I were a passholder. I might bump MK up a place or two if it's the only castle park I ever knew.
I’m not sure if this is a hot take but Epic Universe doesn’t even seem/ look better than DCA
It's genuinely fantastic if you catch it on the right day (and pay for Express). I tacked it onto the end of my last WDW trip on a whim and fell in love with the park almost immediately. Ministry of Magic is one of the most stunning lands anywhere and I could spend a whole day in there (Le Cirque Arcanus is probably worth the price of admission alone), Dark Universe has a Top 5 attraction in Monsters Unchained, and Stardust Racers is a Top 5 coaster.
Again, I think this is where as a lifelong Disneylander I can't really view DCA objectively, but to have seen DCA 2.0's potential squandered bit by bit with Pixar Pier and Avengers Campus and comparing it to Epic's unified vision and philosophy for itself is a tough pill to swallow (even if I too find SNW ugly and hot!). I'm sure if I went to Epic more often I'd appreciate its flaws more, but I can't emphasize enough how perfect my one day was in influencing its ranking.
Food at Epic was great! About par with EPCOT. The Blue Dragon was a highlight.
Re: Your point about natural beauty… I see what you mean, in that Epic currently has nothing like DCA’s Grizzly Peak section. I hadn’t thought about it till now, but Epic is based entirely on fantasy themes and environments. The park is beautiful—particularly in the use of water in Berk and Celestial Park—but right now the only area I’d call naturally “woodsy” would be the werewolf area.
Epic has great bones to fill in for sure; as the trees start filling out Darkmoor and Berk I think this will go away (although I do wish there was more shade now!

). I think Celestial Park could do with way more trees (and mature ones at that).