I honestly feel like that line was overrated. I don't think any of those guys were regarded as being very good before Emmitt got there and none went to a pro bowl before him either. Larry Allen was obviously an all time great but he didn't get there until 94.
Im not trying to say that the line was terrible, but they weren't good enough to be used as excuses as to why the triplets accomplished what they were able to.
Well, like you said, Allen was exceptional. One of the best ever.
Eric Williams (pre Auto accident) was also exceptional. He was a mauler. I absolutely loved watching him play before his wreck.
Nate Newton had really great feet for a big guy, but IMO he wasn't in the same catagory as Allen and Williams.
Other than those three, I think the others were just solid players in the right place at the right time... with the right RB. Pretty good, but nothing special.