Frogman, the yodeling is a Leon Thomas signature thing. The only other yodeling I ever recall before him was that cowboy thing, and there certainly isn't any semblance between the two. Although I recall Rok making the same comment, I like it.
When he sounds like Joe Williams, which is how he sounded when he started with Count Basie, is what I like the least; it's too commercial for my taste.
In the comments section, most of the people stated they liked the yodeling. Someone said he was inspired by African Pigmies, but I don't know anything about that. Someone else said it was an acquired taste thing, but I liked it the first time I heard it; it definitely sets him apart from the crowd, and I think he should have focused on what set him apart from the crowd as opposed to just singing.
Since "Nica's Dream" is my favorite tune by Horace Silver, I liked both versions a lot, but the messengers with Donald Byrd and Hank Mobley was definitely my favorite.
I interpreted your statement as meaning we have covered all there is of significance by Horace Silver. Feel free to take us in any direction you choose.
Enjoy the music.