Why have both?
Last week, at Minecraft Live, Mojang announced the Dappled Forest Biome. One of the new plants in this biome is the "red shrub" depicted on the right. Unlike other plants, it will not be subject to biome tinting. But, any decorative use of the "red shrub" is equivalent to the existing crimson roots plant found in the nether. There is no need to make a new variety of shrub... just biome tint the bush.
To be clear: the red bush SHOULD exist as a tinted version of the regular bush, not a new variety of plant.
u/FabulousFix9285 — 5 days ago