I see that there is supposed be a sort of design motif across the stones/scrolls and seeds/potions(/darts) but I don't see why giving the seeds/darts a more use-discernable design can't still work with that. It'd be like:
| Use immediately discernible from design (Unrandomized sprites) | Use not immediately indiscernible from design (Randomized sprites) | |
|---|---|---|
| Scroll-Type Effect (varying symbols) | stones | scrolls |
| Potions-Type Effect (varying colors) | seeds/darts | potions |
I just don't see why seeds/darts need to differ only by their color when the above can convey what you need to just fine.
Also, wouldn't adding icons to stones be a bit redundant? They already have pretty self-explanatory or, at least, easy-to-learn symbols.
I'm also guessing it's a no on the "elevated" thing. I'm fine with that, if it is. I'd imagine it'd be something that would take a decent bit of time to balance and test. I only asked because I thought it'd be neat.