Babcock's tenure reminds me a lot of Roy's. I think both teams thought the dog years of their rebuild were behind them, but it took longer than they expected.
Both coaches made mistakes, but I think both were hired with the idea that they'd spend a year or two teaching a rebuilding team how to take the next step while the GM put the final touches on the team, before they became a veteran group capable of competing.
Unfortunately, neither team was as good as they hoped, and needed extra time to fill out their lineup, address weaknesses, and learn what it takes to become a good team.
I expect Keefe may end up benefiting from the timing similar to Bednar, if Dubas can add more defensive ability to their blueline. Similar to Sakic with the Avs. I think the current team may be more suited to Keefe than the one Bednar inherited though, so I don't think he'll have the struggles Bednar did his first season.