Mists of Pandaria Classic has Tsulong bossfight where you heal him, similiarly to Valithria Dreamwalker in ICC.

Being able to somehow add him to Grid2 frames would be huge, without having to always have boss frames visible in your grid2 layout.
Either being able to load condition when boss-unit is friendly, or being able to filter out bossframe to whitelist his name/npc id.

Cell simply adds him when he turns friendly and removes when hostile, anchored to last group: