At first, with the Tholen set, I didn't like the rather low mixture, but then discovered (without adding the 1' and/or Carillon) especially with 19th century music how wonderful this actually works. I feel that I have extra octaves to work with: we can go from the low bass and baritone regions with a majestically somber and impressive low pitched thick sound and then move to the tenor and alto ranges for a more normal romantic sound, and then move to the soprano and eventually the mezzo-soprano regions for that sudden outburst of energy and brilliance and thus, goose-bump inducing excitement.
This kind of power and dimension is very different than in a baroque organ and has its own place in the history of music and works wonders for esp. 19th century organ Sonatas from the Mendelssohn type tradition, but also before that time in the works of e.g. Rinck and his contemporaries.
I improvised a short piece in 19th century Sonata style to demonstrate this.
Final conclusion: I love it!
Registration: Full organ without 1' and Carillon. Manuals coupled.