I posted the following nearly a year ago today in the Ingram thread.....
"If you go back and look at last season, you'll see that the RBs in New Orleans, combined, had over 2,500 yards total, 126 catches and 27 TDs. In 2015 they had 1,450 rushing yards from their RBs, with 1,034 receiving yards from 122 catches and a total of 18 TDs. In 2014 it was 1,580 rushing yards with another 882 receiving on 120 catches with 16 total TDs. It's always around or over 2,500 yards with 120+ receptions and somewhere in the vicinity of 20 TDs (more TDs since they got rid of Graham, and now they've lost Cooks). What I mean is that it's a pretty big total pie. Say Ingram gets 45% of it (I think that's fair, and that's giving a lot to both a rookie and to an over the hill Peterson). That's 1,125 yards from scrimmage, 54 receptions and 9 TDs. Week to week, though, he could be all over the place (just like any WR would be). If I can get that after the 5th round in a 12 teamer, sign me up all day long."
To add another year to this history, last year the Saints RBs had ~1,900 rushing yards, with another ~1,250 yards on 139 receptions (so well over 3k yards from scrimmage) and 25 total TDs.
Yet again the point is that the pie for New Orleans RBs has always been large enough for multiple RBs. The last 3 year average has been 2,700+ yards total, ~130 catches, and 23 TDs. Say Ingram is getting only 40% of that upon his return. That's (prorated, I understand he's missing 4 games) a 1,000 yard season with ~50 catches and 9 TDs. Yes, he'll miss 1/4 of that from his suspension - but I'm viewing him as a great backup as his missed games will be early, and he'll be there for you when your earlier drafted RBs have their byes, or should they get hurt.