This was a question above my pay grade so I went straight to our expert on this… He says:
We do not support TRIM directly. We access all external drives via the SCSI layer using EXT4, but do NOT mount with the discard option. This is generally not advised and can cause data corruption on many older SSD models. The use of TRIM is a fine tuning optimization for a very specific hardware setup. Internal disk controllers on newer SSDs should be handling wear leveling adequately.