Grass mod?

[someone1 10]

I noticed that there are no real grass mods or grass versions of the ofp main islands. I find that strange because grass addons exist and I would think grass is something that would soon get incorporated. The only thing I've found is Uwar Grass addon but I have no clue how to make that work (or if it works even). I'd really like to see a grass version of Everon or Malden since even Mapfact's Nogova looks considerably better from the original due to extra vegetation. Not that it would be the most important thing but I thought I'd ask here if anyone could provide some further info on the matter (I did hear it kills performance or something like that).