They were rentals. Bergy hasn't added external talent to the roster whatsoever.
It is true that MB has yet to add an impact player to the team.
But what are the realistic options to make that move ?
Free agency ? Lecavalier, Statsny, Iginla, etc. That's what's available every summer. Major overpayment for players seeking the highest bidder. Not the key to success.
Trades ? Sure. But how many quality impact forwards have been traded in the past 2-3 years ? Bruins would have never dealt Seguin to us even if we could have made a package that would have trumped Dallas' package. Kane ? The minute he announced he was having season ending surgery, it was pretty much over for us. No way we were dealing assets that could help us right now for a guy that would help us next year. Makes zero sense for a top team to do that.
Sometimes, no move is the right move.
Also, Ryder wasn't a rental, it was a hockey trade for Cole. We even got a pick back I think ? Not every player dealt with 1 year remaining on their deal becomes a rental.
He has added Prust who has been a very important piece in turning around our soft image. He's filling an invaluable role IMO. Weise was also an important roster move for us.
Two to three years is a short time to make that big move. I think MB is being very patient, keeping flexibility to make it happen should the opportunity arise. That's why you see all these cap dumps Bourque for Allen, Moen for Gonchar, Cole for Ryder. He's slowly trimming the fat, only keeping the right players.
The main thing I didn't like was the handling of Subban, the Briere signing and Moen's 4 year deal. But they aren't real issues anymore, merely missed opportunities in some cases.