Personally, I love the SA SB2 pedals because they just save you on board real estate. I am just not that big on modulation. But, I have everything I could need with the Manta, OFD, Orbital, and Dimension. Saves me from having 5 filter pedals, 3 choruses, 2 reverbs, 3 phasers, 2 flangers, etc, etc, etc.
Right now, the SB2 pedals take up 16% of the surface of my PT-Pro, the midi stuff is all under the board and on the secondary board (PT-2). Without those pedals, I would need to sacrifice a lot more board space for stuff I kind of want sometimes. I honestly barely use the OFD, I have 7 other ODs on my board, 5 Fuzzes, 1 Distortion, 4 Preamps, boosts, etc. But, it is great to have the OFD engage in a midi scene with the other SB2 pedals.
It's weird, I am perfectly happy getting 1-2 sound dirt pedals. I just don't want to do the same with modulation and filters. I just don't like that stuff enough I guess. So, for me, the SB2 pedals are a great fit, for that tiny part of my board.