Coming from BMW and Porsche - the "dealership" experience is somewhat different.
Buying the vehicle was easy, although not the experience I got at BMW and Porsche dealerships, but I have hopes.
Several decades ago - my first BMW dealer purchase was from a dealer who was co-located with a large Chevy dealership. That wasn't unusual. BMW didn't generate the traffic to build out a large stand-alone dealership. But - they made the best of what they had, which I see as missing at the co-located Genesis dealerships.
Unlike the Hyundai/Genesis dealership, the BMW dealer had a separate showroom and service area. That would seem a reasonable first step for many Hyundai dealerships who don't have the money or traffic to build a completely separate facility. The showroom we purchased the GV70 from was noisy, with all hard surfaces, music blaring away and no private spaces (little tables the salespeople used) and the overall impression was a "Sell it.. whatta we gotta do to get you in this car today?" sort of environment.
I'm a bit hard of hearing (not awful, and not hearing aid level yet), and the background noise combined with the blaring music and echos from all the hard surfaces made it difficult to have an intelligent conversation with our salesperson (who happened to be from England and retained some "English accent".)
Dedicate part of the existing dealership to Genesis, wall off a section of the showroom, and offer the niceties that luxury car owners expect (at least a decent coffee bar and a waiting area that doesn't look like the waiting room of a free health clinic.) The BMW dealership setup wasn't extravagant - but it showed they were trying to service the higher-priced vehicle customers in a way that recognized they weren't Chevy customers.
Once Genesis builds a customer base that will justify it, the stand-alone facility could bring them to the same level as Lexus and Infinity. It might take a bit more in the way of offerings to bring them to the level of Porsche (my Porsche dealer currently has several cars priced a bit over a million dollars in the showroom.. but it's a Penske dealership so money isn't an issue.)