So I just converted our redraft league to dynasty last year, I would suggest for the draft to include everyone rookies and all. This is what I did, no complaints
So I agree with dump defense and do idp, for dynasty its just better, start off with year 1, everyone takes linebackers or tackle machines, but its the way to go. As far as 2 qb, that should be worked out amongst the league. I prefer 1 qb but we do 3 wr and 1 flex.
I run 14 man with taxi, rosters are 25 with 2 ir, and we’re talking about raising it. I would suggest a 30 man roster minimum.
I personally really like taxi, it let’s you protect young guys for a few years for them to develop but then you have to make a decision to call them up, rather than just hoarding players, imo it forces people to not be stagnant which causes the league to get a bit boring.
Having said that if you’re using sleeper I would use the max taxi spots which is 10, and then the other 20 as starters and bench.
Hope this helps, and good luck