What are some examples of bad team scorers? I.E people on perennial non playoff or expansion teams that had good seasons? To go in depth, I mean players who put up good numbers on bad teams with good ice time, but also could not crack a winning team or be a premier scorer on a winning team.
It seems most of the posters on this thread are ignoring your criteria, as most of the players mentioned above had the ability to produce as a first or second liner on other NHL teams.
One who comes to mind who might fit your criteria is former Canuck "Spaceman"
Ron Sedlbauer. The enigmatic 6'3" shoot first proto-power forward was known to be inconsistent from game to game with major defensive & mental lapses that saw him being sent to the CHL every season in his first four years despite showing offensive potential (19, 18, 18 goals in 76, 77 & 78). In the 78-79 season playing left wing on the Canucks top line with Chris Oddleifson & Hilliard Graves, he scored 40 goals & 56 points to lead the Canucks in both categories, setting a Canucks record for goals, with 15 coming on the power play, another Canucks record. The next season he was traded to the Hawks in November for spare parts, but he floundered in Chicago, & was shipped off to the Leafs a year later. He failed to crack the Leafs lineup in 81-82, so he spent the entire season playing for Cincinnati in the CHL, where he clocked in at only 9th in team scoring in 73 games. He was 23 when he potted 40 goals, 25 when he played his last NHL game, 26 when he retired from the sport.
In 74-75, in his only full NHL season,
Dave Hrechkosy led the California Golden Seals in goals with 29, & came in third in points with 43 (the two leading scorers were tied with 45 points each). He was traded to St. Louis midway through the next season, but only ended up playing in 28 games for the Blues over the next two seasons, where he spent most of his time with their affiliate in Salt Lake City. He played his last NHL game in 1977 at age 24, & was finished with pro hockey by 1980.