Steve no head mounted thermal systems are mentioned in your post only handheld or weapon mounted systems.
The VIPIR2+ are weapon mounted systems commonly on GPMG, HMG and GMG's.
TheFTS is weapon mounted and generally used by GPMG's and SL's.
HNVS do not have thermal capability (We have them on the server BAF mod)
The CTLS and TAM-14 are hand held and generally only issued to SL and FTL's
I don't think much has changed since FIST was introduced.

Also I'm not pushing for a ban I just think they should be discouraged unless called for by the activities taking place decided by the Section lead or Troop Commander.