Nope---the crays stay!
I'll be putting Jericho & Jerrica in the 20 gal. long.
And thanks for the feedback, everyone.
It's nice to see a lot of differing opinions on the aquascaping I've done in this tank!
It's definitely growing on me, so I'm leaning toward your advice to keep it as is, lordroad.
The pieces of driftwood I've got positioned vertically are in fact separate pieces (there are 11 in this tank altogether). I've got them partly buried under the gravel, but for the most part I've managed to keep them upright by wedging them against one another, rocks, and the sides of the tank.
Everything is fairly sturdy.
Once the salvini get bigger, I'll likely pull apart the rock cave on the left side of the tank to open things up a bit more for them.
Thanks!
BV