Potential classes turn out to be surprisingly ToME compatible.
Warrior
Sniper (archer)
Outrunner (rogue)
Scientist (former mage)
Ecologist (geomancer)
- An ecologist wishes to use the sciences of geology, climatology, chemistry, and fluid dynamics to make Snowglade the green planet it once was.
Engineer (3.0.0 style alchemist)
- Engineers specialize in using technological devices. They can make new devices given sufficient materials, but since many components are beyond the current human ability, they need to find them in the dungeon.
Inventor (thaumaturgist)
- Inventors are not content with copying old tricks. They want to invent new ones. They never know what weapon they will invent next, other than that it is extremely likely to be a weapon. War does that to imagination.
Biologist (former necromancer)
- Biologists, known as Revivers in the Wedge, use the dark side of biology and can raise the dead. On Snowglade this particular application has been a mech thing, but by the time the game starts some human may have picked up a few things.
Priest
Interfacer
- A "priest" of the Syntony
- Other priests
Mindcrafter (yes!)
Diplomat
Possessor (indeed!)
Mechanic (former summoner)
- A mechanic, if he or she is able to kill a mech (or even an organic creature!) without damaging it too much, can rejig its brain to turn it into a pet. Partial totem creatures are in this scenario powered short-lived power sources that give out after a while. Mechanics and biologists attain similar results by different means and game mechanics (pun not intended).
Summoner (former demonologist)
- Summoners use mech equipment which can transmit emergency overrides and summon mechs as pets. Well, the dumb ones anyway which luckily for summoners is not synonymous with being low level.
There is also well room for subclasses and related classes not mentioned here.
ToME Wiki