OK, never mind. I took a deeper look at the package and apparently it just needs better (much better) textures overall. For example, on the palm tree trunks there is currently no specular detail, only a very coarse normal map - so it’s no wonder that they look so flat in close-up. Same for the rock face and dirt-pebbles mix - they start looking a lot better once I swap for some HQ textures.
So, I would say, if there ever is an update to this thing, maybe consider improving the texture detail (doesn’t really need to be that much higher-res, just cleaner and crisper where it matters; I might post pictures here of what I mean). And - for the love of Moby D!ck - don’t drown everything in Bloom, ever!