But Tim Shoebridge said pretty much the same thing as you do. The B Moog modules are big and unpractical. The S triggers are a pain in the ass and you need a lot of modules, patch cables and space to get the job done. In his words, Bob Moog was a engineer, not a musician and it shows in these early designs. One of these designs actually uses the term 'regeneration' instead of resonance.
Behringer copied everything as it is, faults and quirks included.
As for me, for Moog equipment, I went for the real thing with the Grandmother and I really like it.
High quality production, spacious and logical interface and pretty awesome sound.

As for the 2500 series, I bought the envelopes just because they were very cheap and i needed envelopes. I do like the 1047 so I might get that next. ( Yet another filter

As for sequencers, the modular sequencers still haven t convinced me. You typically need a lot of space with two big modules combined and you are typically stuck in a 8 step sequencer. The SQ-1 is convincing me a lot more, is cheap and saves me the space in my case. (The Grandmother has a sequencer too which I could use together with the SQ-1. I m still chewing on sequencers... ).
Here are some interesting reviews from Tim Shoebridge on the Behringer 2500, 55 and 100.
https://www.youtube.com/watch?v=uG8tx8BXed0
https://www.youtube.com/watch?v=9VqdMoeSmcM
https://www.youtube.com/watch?v=PgmhmvIZ8qk