Injuries in an "average" season for a team?

Injuries happen to every team, but it's how it's mixed up,  were they starters, were they backups, did they happen spread out over a few positions or did they all the positions take a hit. 

Most teams aren't dealing w/multiple OL'men who were wearing street clothes to start the year. Most teams won't be on their 2nd or 3rd qb. Most teams won't have their depth/ST's WRs starting the 50% of their games.

Last years expected WR to start were White/Wheaton/Wright. Wright was the only one to play any significant time. Zach Miller only started 8 games, 18 of 32 in the last 2 seasons. I'm betting 50% of teams didn't have 2/3rds of their starting WR's drop before the season started, AND have their starting TE only play 1/2 the season.

I'm not talking about our last year's team but rather a typical year for a team.  It sounds like most teams lose about half their starters for some games in a typical year.  If I read that article right it said 45% of starters on a given team play all 16 games.  If that is correct (not sure it that it is) then that means 11 or more backups are going to be starters in a given season.  At least for one or more games.  

Obviously you can't have a roster of backups that are starter quality.  But I believe the talent gap between the starters and backups is narrower on some teams than others.  

It is all the more critically important for a team to have the pipeline of quality young talent coming in each year - not just for starters, but for depth positions also.  Most of us fans understandably get excited about the starters on the roster, but quality depth players are really critically important also.  This not only depends upon scouting/GM but also having a coaching staff that can truly develop young players to hit their talent ceiling.  We have not had than many years here.  That talent gap between our starters and backups was too large in past years.  Now, it sure looks to me like the team has the staff to spot young talent, and we have the coaches who look like they can develop that talent better.  

That is huge.