First, there's no such thing as pulldowns now! ;) you have access to any and all recruits you want to target at any level. Of course that affected by who else is recruiting them.
I agree that if a one season return is all you're interested in, you're likely not gonna enjoy it. I just play the long game with HD. I know it's a marathon and not a race. (I prefer full rebuilds and outside of D1 I've only taken over a team that has human recruited players one time). Hopefully you'll enjoy it and stick around more than 1 season! The community is great and so is the competition.
also, again I can't speak on the past, but I think the credit system is the same or similar as it used to be. If I'm wrong, someone please feel free to tell me I'm wrong. But I thought it used to be the same...... 2nd round $5, S16 $10, E8 $15, F4 $20, title loss $25 worth of reward points, and a title win at $37.50 worth of reward points. If you buy by the 10pack, a S16 every season means you play free.