@vocenoctum

I don't believe you actually remember the reasons for why Tree of Life Form was removed. You can't say that they don't apply to Bear and Cat Forms because Bear and Cat Forms were the direct reason as to why ToL was removed.

1. Tree of Life Form did not change the druid playstyle by shapeshifting. The druid could heal just the same without shifting as they could with shifting. This is directly unlike Bear or Cat Form where you cannot tank or melee DPS without them; they drastically change the druid's playstyle. ToL was a shpeshift for the sake of having a shapeshift

2. Tree of Life Form limited the potential of the druid. No other healer had to give up their offensive capabilities in order to heal, which was a major draw back in PvP, and some parts of PvE as well. Druids need to have the same access to offensive abilities as other healers in order to create balance.

3. Tree of Life Form held no direct purpose. It increased healing yet that increase was nothing more than a phantom. Being in ToL didn't make druids better healers than other classes, it made them equal healers. Therefore, why bother having a Form which only increases the already existent capabilities of druids to be on par with other healers? They could just as easily bake the increased healing into a talent elsewhere.

All of those can apply to Moonkin Form as well -- with the one exception that shadow priests also have to give up their healing capabilities in order to DPS, which other hybrids don't. Moonkin Form doesn't change the druid's playstyle, it exists solely because the development team back in Vanilla thought that the only reason players played druids was for shapeshifting, so they should give all druids a shapeshift. It's a shapeshift for the sake of being a shapeshift. It's purpose is purely cosmetic.