There are very very very few raid prepped, knowledgeable tanks in this game. The ones who know the fights are already wrapped up in their own little guild runs.
At any given time, with the lower population there are MAYBE 2-3 tanks available in group/raid finder. By forcing this tank meta, bioware is eliminating the pve aspect of this game. Why would they not allow us to use companions in raid finder as tanks? Why force that old beat down MMO meta that you design raids around tanks the most rarest role in the game?
When someone bites the bullet and rolls tank spec they are nailed to a cross if they F'up one boss pull.
This is NOT an indepth MMO, it would be nice to take the arcade like feel Warzones have and allow us to logon for a few hours and run a raid in raid finder instead of hanging on to this maint mode travesty.