I don't know Saviuk's backstory, but I do remember being disappointed in his tenures on both Flash and Green Lantern.
It didn't help that he had to follow Irv Novick and Mike Grell, but he just didn't have "it."
I think Irv Novick is very underappreciated as an artist. He co-created Archie's Shield character in late 1939, and really updated his style to fit then-current comics in the 1960s and 1970s.
I think he was very instrumental and really didn't get his due for his part in updating Batman and returning him to a more serious character after the campy 60s. He drew pivotal stories like Batman 217's "One Bullet Too Many," which saw Dick Grayson leave for college and Bruce take residence in the Penthouse apartment, which really set the tone for Bronze Age Batman. Novick's Flash was the one I grew up reading in the 1970s, and it will always be a favorite of mine. For an artist to stay relevant from the 1940s through the 1970s and beyond was a testament to his work.