I enjoy ANTM a one of my guilty pleasures, and I really enjoy the earlier seasons before it became such an over-produced show centered around Tyra Banks and her ever-growing ego.
During the first two seasons, Tyra spent a lot of time with the girls hands on, and the results of her tutiledge were much better than in later rounds, wherein she eventually was seen only in judging and clearly kept her distance from the participants.
I believe her later "cycles" would've been more successful if she were present more often, instead of having producers creating wilder and more outlandish challenges and obstacles for the girls (and later, guys) to overcome.
I enjoyed the addition of ALT in cycle 14, but it became obvious very quickly that Tyra not only worships the ground he walks in, but began speaking and behaving like him on camera. Somewhere in there she lost that "realness" she'd been known for an simply became a charicature of her former self.
If you want more of the "real Tyra, watch seasons 1 & 2.
PS--Thr casting portion of the show can be very entertaining, and I don't blame them for adding casting week as part of their show. Whether in American Idol or ANTM, it is fun to giggle at the hopefuls and their antics and select an early favorite or two. It's the one change I welcomed and applauded.