Is there any good way to keep EXOT reaction isolated, using only destroyable materials, if not, everything except for walls&diamond?
The EXOT reaction. . . you mean when it turns to WARP? If so, that would be pretty hard. With huge amounts of WHOl with a very large tmp value, you could possibly contain a small reaction. If that doesn't work or is too big, perhaps you could use FRAY to keep WARP away from the walls, using CRAY to repair it if/when it gets damaged.