Could we have a new small guild, explosive engineers (civ bg).

They could create explosive materials from mined minerals. Rig
places with explosive traps, create fireworks (meh...), create throwable
bombs, molotov coctails (fire AoE damage over time), start forest
fires, give camping fires more boost etc. And when the archer guild
is ready, the engineers could make explosives for arrows.

The engineers could also blow holes on the ground to search minerals/
make a mine produce more material, and so on.

This would give the civ bg a tad bit more variety, since civ mages and
figs are so extremely popular...

~/A