[Suggestion] Change keep distance depending on creature's HP

[Toni Ballador]

1 - Hello! I'm starting to have problems with the feature 'keep distance' when creatures run in low health.. specially creatures like young sea serpent or wyrms, which run so fast..
Is it possible to add a feature to the killer?

2 - Something that would allow us to do:
Keep 4 sqm distance if creature's hp>=20% and keep 2 sqm distance if creature's hp<=20%

I think i'm not asking a wonder, it's something very basic for paladins
Thanks