There is no point in brining another beorning because the class is not competitve with with the others in the similar role, including the Yellow line, actually. Both Minstrel and Rune Keeper are more realiable and versatile (Captain healer is a different sad story). If you think that placing the debuffs in different lines will secure a spot for another bear, you just delude yourself. Most likely Yellow beorning will be replaced by a Minstrel or a Blue Captain.
My goal was to make red bear viable in certain comps in high tier raids rather than having two bears in one raid. Yellow bear is definitely competitive with other healers. Red bear being viable would bring a lot more diversity to raid comps because you are not forced to take a yellow bear anymore so you could use a blue cappy or second mini/rk.