I love Guhle but it's way too soon to claim he could become that type of dman. Not to mention that we needed Markov and Subban, Markov and Weber, Petry and Weber to even be above average, Mailloux, Barron, and Hutson are all giant mystery boxes. We need another Guhle type player because the players you mentioned are more 2nd/3rd pairing dmen.
We've already got four future players for the top 6 in CC, Suzuki, Slaf, and Dach. The depth also looks good with guys like Mesar, Heineman, Roy, Kidney, and Beck. Sure not all of those guys are destined to make it, but one of them could even become a top 6 player for us. I'm also fairly certain we are going to make a splash for PLD.