Your new design does look better to me because it seems to be more regular with better symmetry. The skewed faceting is interesting indeed - I’ve not seen anything like that before. That’s probably because it took a lot of work to make them. (I’ll have to look at how you did it and see if I can understand it.)
The shadow areas on the bottom of your facets will be a bit of a problem because of their overhang. Here’s what I mean - this is my most recent post online: Petals4. It looks nice from the top, but here’s what the bottom of one of the petals looks like:
There are various ways to smooth that out, but I just haven’t done that yet - and probably won’t.
To answer your question - yes, my wife has raised some small succulents in a few of my printed parts. But what happened was they got too big and had to get repotted into larger real pots. This only took a few months, so we gave up on the idea.
There is another problem, and that is that the filament I use (PLA - polylactic acid) is hygroscopic. So over time it absorbs moisture and becomes spongy. There are other types of filament that don’t do this - like nylon or PETG - but I don’t use those because they require different slicer settings, higher temperatures, and can outgas undesirable fumes. PLA is 100% organic and does not have these issues.
About the inside surface: I tried using GraphMapper to make the overall shape, but I found it hard to get the flexibility I wanted, so I switched to the GenePool where I use the individual sliders to set the radius of the cross-section curves that I stack up vertically. Then I Loft these to get the basic overall shape. Once I have that there are various ways to make the outside surface fancy. For the inside I just Loft a reduced diameter set of the outside curves. This produces a nice smooth inside and eliminates the problem of thin walls when the overall shape has both wide and narrow diameters.
Sorry for such a long post - but I’ve been looking at your bottom image and I think what I’d do is extrude each of the facets out to a point that is maybe 2 or 3 mm higher than the facet’s center point. Here’s an much simpler example of that: DiamondBowl3