I think you draft / trade based upon availability to top end draft picks.
Our dynasty was built off drafting from the top of the draft, because we were crap.
2006 - Jack (8), Shedda (26)
2007 - Cotch (2), Rance (18)
2009 - Martin (3), Astbury (35). Grimes (PSD - 2)
2010 - Houli (PSD - 3)
2011 - Ellis (15)
2012 - Vlastuin (9), McIntosh (31)
Thats 11 of our premiership 22 from 2017. They keys to that were obviously Jack, Cotch and Martin. We don't do any of 2017 without those top 10 picks. Last year was the 1st draft we had a top 10 pick since 2016 (when we traded it for Prestia who was also key in our premiership).
With either just kick the can down the road, until all our stars retire and we become crap again and can then access those top 10 picks, or we get creative.
IMO our current list has been built backwards from what we did with those dynasty years. Those years we drafted at the top end, then chipped away with trades and lower end draft picks to generate that list that won us 3 flags.
We've not redrafted those kids that are and will be the cream around the cake but not the cake itself. We aren't crap enough to draft the cake again so we need to recruit them in another way, and I think thats what we are trying to do right now.