The one thing that annoys me sometimes on THF is that the tanks sometimes feel the need to stand too far away from the mob in order for me to TA effectively.

Somethings I would like to see:

1) Maybe some kind of method to "ask" a trusts to cast a particular bar spell. I know of one trust that does cast barspells, but only if they have been hit with the initial spell first.
2) Trusts zone with you. Kind of like how a SMN avatar works. Maybe even a trust macro template, to call a particular set of trusts for different situations.
3) The option to STOP/START certain trusts from weapon skilling. Countless times skillchains get broken by trusts randomly weapon skilling.