If you add a hero, it should be something unavailable to the Mechanos, and designed/balanced as such. Otherwise it will simply be another Mechanos hero, and if you're going to make one of those it should just be Mechanos specific anyway so they don't have to hoard their religion to be sure they get it.
EDIT: and in the time it took me to say that, you already sort of addressed that point
EDIT2:
Total of 3? What changed? They have Feris, Goliath, and Boris already, and I thought you mentioned a potential zeppelin hero somewhere. That plus a religious hero would make 5.
I didn't bring in Boris, actually. Wasn't even aware he was Mechanos only....

And the Zeppelin hero was actually a potential religious hero.
Why not make the religion avalable to all, but with special bonuses for the mech?
That is what FOL is at the moment but for the elves.
Mostly because of it's method of spreading. I've already redone the weighting so anyone CAN follow it, it's just highly unlikely, but it's only foundable by the Mechanos, and can't be spread until writing even then, unless they get a very early Great Engineer.
That isn't a bad idea. Other civs can power up the steam tank and enjoy the tile bonuses from refined mana. The restricted spread will probably prevent mass-adoption foolishness. The Mechanos obviously have more uses for the mana, so all is well.
In other playtesting news...other civs are building refineries. The infernals in my current game have a few of them.
Honestly, the refined mana bonuses would probably be a good thing for the AI. They don't know how to use mana very well anyway yet.
Just make it so the Ordo Machinarum's hero isn't buildable. She (or he) would only be acquired through an event that would happen in evey game (or not?) but with a little weight and very harsh requirements.
Bad idea, realy bad idea.
I kind of agree, actually, if just because I really dislike the event units... they never show up in my games.
The steam tank sounds a little odd.
I think something like that should at least require Engineering + Bronze working. Mathematics seems too early for a tank.
I'd also suggest making it more powerful with iron working, mithril working, and machinery. though autoaquire promotions based on the unitclass and tech prereq. Probably should require it to visit a city for upgrading.
I think the no ranged damage limit is a bit overpowered, to start with. It would be quite reasonable once it's made of mithril and has advanced machinery, but it should have a limit to start off. Maybe 50% or so. That's a hell of a lot more than most archers.
I like the upgrade idea. The main reason I'm using the steam tank, is both the Mechanos and the Khazad already used it, and it fit the religion. I'm thinking of adding an earlier siege unit, and moving the siege cannon back to be the second UU for the religion.
The hero isn't necessarily the core of a religion.
But if really the idea doesn't appeal anyone, one alternative would be to make the Ordo Machinarum hero unbuildable by the Mechanos.
I think the Hero might actually just be a Techpriest, unbuildable by the Mechanos, and then I'll give the Mechanos the Zeppelin as a hero. Gives them 3, which is average with a religion. It'll also give one other civ a fullpowered, or stronger, techpriest.
It's a little hard to track everything that's been said about the Machine folks from here. Where does the discussion really /start/?
Yeah, it's gone on for a while.
Steam Tank seems a little odd to me too, but guess I am thinking of the one from Age of Wonders (where it was the uber dwarf unit, that was a killer transport as well as a slayer of men)
Also where the dwarves-in-hot-air-balloons thing came from.
To rip off one more from that game, and totally off the topic of this thread.. how bout a flying UU for the Orcs? DOOM BATS! relatively high tech, a swarm of nasty bats. Maybe as a rebasable air unit a'la vanilla civ fighters, that can intercept blimps/etc, or as a normal unit, a fast flyer with low build cost, low (but poison) strength, blitz, and animal... maybe a beastmaster replacement? Unless one of the ogres is in there, can't remember.
I don't think the Orcs would really have much affinity for them. Besides, why should Orcs get bats when there are vampires in the game?
