If we had to choose one or the other, I'd go for flat ground. After all, we can always make a volcano. Hey, that could be our megaproject! An artificial volcano made out of decorated wood! We should probably agree on some ground rules for what we're going to do, since some people will be limited by technology and patience. For example, raising tanks requires some pretty close attention, and the tendency to use lots of poultry in more recent updates plays hell with some people's FPS.
I've been catching up on the episodes today, and by my count, Rarity is a legendary clothesmaker, a legendary weaver(she made that gold fabric in Stare Master), a legendary gem setter(she decorates clothes with gems in the Diamond Dogs episode), a legendary miner(finding gems every time with magic, even if she doesn't dig them out- wait, does that mean she's a legendary teacher, doing demonstrations?), and does whatever it is that feathercrafting entails. Wouldn't surprise me if she was a legendary leatherworker, too. Her stats must be freaking godly. Once I'm all caught up I'll be able to give some thought to rock flowers.
Since my current fort is cave ponies, I'm running a fairly big clothing industry. One problem I'm seeing is that when I have handkerchiefs and bandanas made, they're always left or right ones, which is only useful for gorlak ponies and underlords(I assume they're stretched rather than perfect squares, and that's why they have an orientation). If I made a custom reaction for gloves, would it spit out unorientated gloves?
So, plans for the next update: Fix the orientated handkerchief/bandana problem, add buffalo and diamond dog civs, custom reactions for pretty wood, add various plants for different paints, give the various worms some unusual extracts to set them apart. Maybe add poison joke as a savage herb with a groovy extract. Oh, and apple ents, but that might take some testing to get them to work right.
My thoughts for the worms so far are:
Angel hair worm thread
Sweet worm syrup
Wheat worm paste(this'll need a new reaction, since the vanilla one calls for seeds)
Cave wheat worm beer
Blood worm juice(probably just a syrup)
Grave worm extract
I'll probably add a version of the entity file that cuts out the usual races, so that the world isn't quite so crowded. As always, completely modular, free choice. For the succession game, I was wondering if it might be nice to make a new pony creature that combines all the castes we currently have, so we have a random grab-bag of regular ponies, zebras, diomedians and cave ponies. At this point, I'm defining so much caste by caste it'd be pretty trivial.