Don't share the comparison between Ruvic and Wesker made by some. The one thing they have in common is doging bullets. BUT do notice that Wesker only has these powers in Code Veronica and Resident Evil 5 (which is when Mikami was less involved if not sidelined altogether).
Whereas Wesker has all this charisma built up around him with leather jackets, suits and glowing reptilian eyes with sunglasses, Ruvic just looks gross. Ruvic's horrifying appearance is very thematic to the game, but in the end, face it, he looks pretty much like a "teenage boy with hoody seeking revenge". I also wonder if Ruvic can have such an intriguing background story as Wesker, who worked as a bio researcher and then quit his job because he got bored, to specialize in intelligence and began working undercover in a police assault team.
Compare Code Veronica to The Evil Within and what do we see: Evil twins Alfred and Alexia find out they are the result of an experiment by their father Alexander, done to restore the Ashford family to its aristocratic splendour. CHECK. Disgruntled by the story of their origin, they choose to experiment on their father and turn him into a monster. CHECK. Alexia continues to experiment and eventually becomes a boss-enemy in the game, whereas Alfred is left by himself and becomes a psychopath who stalks the player and makes his life miserable. CHECK
My point is this, for Ruvic to make an epic villain in the Wesker class, they will need to dig deeper and find something more substantial than "rich born boy from a secluded family loses it" with as base game motive "insanity".
I do agree that Capcom ruined it at the end by deciding that Weskers enigmatic motives be brought back to "God complex" and "Social Darwinism". That's where his motive and character became totally cliché. As Chris says during the final fight "taken from a comic book villain" - which really is a criticism towards the story writer of the game itself.