The local congregation is suffering through the learning experience without complaint, but with no real enthusiasm either.
It is all very generic sounding and I assume that to be by design. With the new GB, I'm guessing that "new light" = syllabic. It took a few months before I noticed that nearly all the songs are completely syllabic. That means that for the melody line, there is exactly one note to one syllable, one syllable to one note. Wording is adjusted for accents, beats, length, and clarity of content. There is some variation of timing and meter among the songs, but overall, it's extremely formulaic. Melisma has been almost completely abandoned. Melisma means to stretch a syllable over a series of notes. It has a very artistic and fluid sound, but probably sounds too "churchy" for GB 2.0.
For example, we're well acquainted with "Keep Your Eyes on the Prize". This song still has very limited melisma in the new book. The first word, "When..." is sung over two eighth notes (as I recall). I think 2-note melisma occurs 4 times for each verse like that. Most of the songs that previously contained melisma are now syllabic by rewording or just adding words like "the" to fill the second note. Now imagine singing "Keep Your Eyes on the Prize" with the syllabic opening, "When the eyes of blind ones see again..." That gives you some idea of how utilitarian and unartistic JW music has become.
Add the fact that the singers are untrained and singing just one monophonic melody line to homophonic pre-recorded piano accompaniment, and they've taken 'art' out of music. It's almost like they deliberately make the songs sound anti-religious. I'm not a fan of many of the historic styles of religious music, but the current JW songbook hardly qualifies as "music".