BoD mechanics will 100% need tuning unless you can literally one shot every boss in that place. There is the Legion HoV raid that needs you to split the boss, same in ToS with that boss underground that you have to swap to the other area. And probably many others like the first boss in Hellfire that people had trouble with doing solo.
It would be nice to have all bosses that are mechanically possible to do solo and not have to 100-0 in 2 hits.