Hmm, I think of the FX block as this combination:
Multimode filter + envelope
Overdrive
Amp Envelope
Reverb settings
Delay settings
Some routing and send options
2 LFOs
Sequencer track
The LFOs have all the items above them as potential targets, and the sequencer can lock values for any of the items above it, and it can trigger (or retrig) the filter envelope, amp envelope, and/or LFO on any step.
The routing chooses whether the amp/filter/drive processed audio is sent to Delay/Reverb or whether D/R are sent to it.
For effects beyond amp ducking or trance gates, I think the sequencer is best used, and quite powerful, either at 1/8 time scale (32 bars) or turned off with different presets, delays, and combo fx scenes cued from trigs as a few of us explored in this thread: Syntakt FX Scenes + Techniques
Does this help answer your question, or is there something else you were trying to figure out?