Canes managed to miss the playoffs 9 straight seasons, and I don't think they were deliberately tanking.
And it wasn't even by terrible drafting, but some funky management:
2009: Paradis #27, Dumoulin #51 (traded with Sutter and 2012 1st [Pouliot] for Jordan Staal)
2010: Skinner #7, Faulk #37, Anderson G #187
2011: Murphy #12, Rask C #42
2012: Di Guiseppe #38, B McGinn #52, Slavin #120
2013: Lindholm #5, Pesce #36
2014: Fleury #7, Nedeljkovic G #37, Foegele #67
2015: Hanifin #5, Aho #35, Lorenz #186
2016: Bean #13, Gaither #21, Kuokkanen #43
2017: Necas #12, Luostarinen #42
2018: Svechnikov #2
They were build much like the Flyers, while they had more high picks, all but Svechnikov have been traded or allowed to walk.
Waddell took over in summer of 2018:
6/23/18 - Hamilton, Ferland and Fox for Hanifin and Lindholm
8/2/18 - 2019 2nd, 2020 3rd for Skinner
1/17/19 - Niederreiter for Rask
4/30/19 - 2019 2nd, 2020 3rd for Fox
9/24/19 - Edmundson for Faulk [then Edmundson for 5th rd pick]
2/24/20 - Skjei for 2020 1st
2/24/20 - Trocheck for Haula, Wallmark, Luuostarinen
10/10/20 - signed Fast
4/12/21 - Hakanpaa and 6th rd pick for Fleury
What is interesting is Carolina lost in terms of "value" in most of their trades.
They had five picks in the top 10, 4 which were traded away, garnering Hamilton, Hakanpaa and a 2nd, 3rd, 5th, and 6th rd pick
The rebuild started with the 2012 draft (after wasting 3 years), less about the top picks but about adding 2+ starters a draft for a long period.
That critical mass allowed them to trade for Hamilton, give a 1st for Skjei.
Took 7 years from when the rebuild started to make the playoffs, two more years to be a legitimate contender.
Which counsels patience with the current Flyers, as long as you keep adding 2+ players a draft, eventually it should pay off.