It's interesting to me how those Denver teams always seemed to underproduce.
Every year between 1977 and 1984, they had some combination of at least three of the following: David Thompson, Dan Issel, Bobby Jones, Alex English, Kiki Vandewaghe. They made it out of the first round once. It wasn't until 1985 that they made it past the second round, when the only "star" left was English, accompanied by Fat Lever and Calvin Natt.
In 1977 they lost in the semis to the Walton/Lucas Blazers that went on to win the title.
In 1978, they lost in the WCF, beating the Bucks in the semis and then losing to the Sonics in the WCF.
In 79, they lost to the Lakers in the 1st round (pre-Magic, but they did have Dantley, Wilkes, and Nixon with Kareem)
In 80, they traded McGinnis for English at the deadline and Thompson played 39 games, so they didn't make the playoffs.
In 81, they didn't make the playoffs. That one is the strange one as English, Thompson, and Issel all played the season and they had Kiki for 51 games.
In 82 they lost to Phoenix in the 1st round.
In 83, they beat Phoenix in the 1st round before losing to the Spurs in the 2nd round
In 84, they lost to the Jazz.
I suppose they could have beaten Phoenix and Utah and maybe the Spurs, but I'm not sure how much they actually underproduced either. It is apparent though that they struggled with teams that had excellent scoring wings i.e. losing 2 series to Dantley (LA and utah), the series to Gervin, and splitting with the Walter Davis Suns.