There are a lot of things that are way more important than the physical appearance of their building/facilities. My nearest Mitsubishi dealership is about 65 miles from my hometown area. They were a used car dealership that took on Mitsubishi about 2-3 years ago. Visiting them twice was the worst dealership experience that I have ever had, but I appreciated the test drive of one of their Mirages just the same.
In spite of my low opinion of them, they are still selling cars. They still outgrew their original place and have since moved on to a new one. Moving to a nicer building hasn't changed my opinion of them.
If someone asks about my Mirage, I have no problem recommending one. Especially if someone wants a second car to use as a daily driver or just wants a dependable little economy car. If someone asks where they could buy one nearby, I wouldn't have a clue? In my mind, that's a problem Mitsubishi still needs to overcome. A newly formed relationship with Nissan hasn't improved their image in my mind either. Mitsubishi has great potential. People are starting to recognize the value of their product. Their dealership network, however, is a major obstacle.
As far as a product goes, the Eclipse Cross does well against similar products offered by other brands. For example, the Mitsubishi Eclipse Cross competes well against the new Jeep Compass. Slightly different vehicles maybe, but even the reviewers are surprised by the Eclipse Cross. One of them even says, "I think Mitsubishi got their Mojo back!"
2018 Jeep Compass vs Mitsubishi Eclipse Cross - see below
https://www.youtube.com/watch?v=LE6OjvSu6CI (drag race between the two)
https://www.youtube.com/watch?v=GHXfDy0xSoM (off road test)