Glowberries/kelp aging poorly

Glowberries (and kelp) look phenomenal on world generation.  However, over time, when the berries/kelp are all 15+ blocks long and no-longer as varied, the oceans and lush caves loose a lot of their beauty.  I would propose that all glowberries/kelp/nether vines generate with the maximum "age" tag so that the ones created on world generation do not grow any longer.  Punching the end off of one, bonemealing it, replanting, etc... already resets the age tag so this would then make the kelp/berries grow again.  An ocean that is filled floor to sea level with kelp is not pretty, and the lush caves on the experimental snapshots seem to have the same pitfall over time.