Since nobody has responded, I'll give it a shot even though I'm sure to cause some blowback with my opinions.
1) Iowa is no longer dominant because of a few factors, but the #1 factor is what you mentioned - Gable. Gable is the greatest wrestling coach of all time and among the greatest coaches (any sport) of all time. No knock on Brands - who is a great coach - but he is not the all-time greatest coach in this sport. So, yes, that is the #1 factor. Some will say more parity, but I don't see that as being as big a factor and if you really look at it, there is not a ton more parity in the sport team wise. Others will mention Iowa HS wrestling, scholarship reductions, the way scholarships are used, etc., but IMO you got the number 1 factor right when you mentioned Gable.
2) No. I'm not of that opinion, but it seems to me that the opinion of this board is that the majority are not completely happy with the staff beyond Terry.
3) Recruiting has been very good, but not great. Although it seems to be on an uptick, but in the opinion of this board much will ride on some of the big guns over the next two years - mostly Hall and Lee. If Iowa doesn't get either Hall or Lee, I'd suspect there are going to be some unhappy campers on this board. But the reality is that neither of these guys are going to make or break any team. As far as Hall - many are calling him a once in a decade recruit, although my opinion is a bit more tempered, as we seem to have one of these kids coming every year and there are now two of these types of kids coming in the very next year (2017), lol. Again, I'll point out that he is making a big splash because of his freestyle results, and by some weird transitive logic that include Valencia and folkstyle AND freestyle results, but I could easily point out that he has also taken some losses in freestyle to kids that aren't being predicted to be 4x National Champs. So to sum up that ramble, he could be great, but will he be a 4x AA or a 4x National Champ, or neither, or something in between. TBD.
So if you weren't trolling and that was what you were looking for, hope it helps.