Hey,
i played for a few years in the past and returned now after some years of break. I always loved tanking and still do. But sadly it feels still useless to gear up as a tank. It doesnt feel rewarding to make gear with new stats, higher tier or higher wepon tiers. Compared to dds you literally need nothing to tank the endcontent.
Before my break as a healer it was the same. But now healers have the the possibility to have an effect on their buffs with their wisdom. maybe you can think about make the power of a tank more depending on the gear ... for example by scaling the aggro with the stamina or sth. like that