On the balance of things I fall on the liking Vic side of things. Though thanks to Vic we also had Mirror Vic, which I think was one of the 'stupid' moments of DS9.
It absolutely amazes me how now, 15 years after the fact, people still --
still!-- think that was "stupid."
Consider:
Noonien Soong fashions at least a half dozen androids, most in his own image, another in the image of his late wife.
Consider:
The holodeck is used repeatedly throughout the later series and films to recreate images of everyone. Picard, Riker, Data, Geordi, Crusher, Troi, Worf, Wesley, Barclay, Sisko, Odo, Kira, Jadzia, Ezri, Bashir, Quark, Rom, Nog, Weyoun, Damar, Janeway, Chakotay, Paris, Kim, Tuvok, Torres, Neelix, Seven, Kes, even Spock himself gets a hologram done up in his likeness ("This is Ambassador Spock of Vulcan...")
Lo and behold, the seminal hologram of the franchise, The EMH aka The Doctor on Voyager, was programmed and based on the image and likeness of its creator, Dr. Lewis Zimmerman. Who also, by the way, later went on to try to make the LMH in Bashir's likeness.
So.
When considering that Vic Fontaine is a holographic program as created by Bashir's friend Felix, I ask you, fellow Trekkies, is it not simply within the realm of possibility that the template for the likeness of Vic Fontaine was based on a real person in the 24th centuray named Vic Fontaine?
Is it not possible Felix then actually
knows this person in the prime universe?
And further is it not possible then that this real-world Vic Fontaine would also find his way into the rebellion in the mirror universe, the way Tuvok, Jennifer Sisko, and every Ferengi from Bajor to Cardassia did?
Mirror Vic was just a brief gag, I'm not sure why anyone would think it was horrible.
As for Vic Prime, I dig his character and his music. If you can't enjoy such cool music, then you're a square.
Yes. This. Precisely this.