In response to the first post, I find some of the 'solutions' strange.
I like the Steamtank change- that fits well with the Warhammer version (though I've always had the opinion that trying to run it unsupported was never intended to be a good idea).
For the Helblaster- Ignoring a single 1 rolled may be ok, but given the variable number of shots it becomes oddly reliable at its longer ranges. If it ignored two 1's then it'd be pretty damn reliable even at short range, and almost completely safe at longer ranges. These things are one of the most temperamental machines that's ever been in Warhammer- Please don't strip it of that.
With the Bone Thrower- it doesn't have any worse deal than any other Bolt Thrower in any other list (excluding the Repeater varieties). I don't remember the length of that list right now- I know Goblins can get them though. Do you intend to change the rules of all of them?
On the Grail Reliquae- I find the 'solution' to make little sense. It just means it's a must-take at 2000pts, which is pretty much the same as now. Keeping the command penalty is something, but surely a simple points adjustment would just be easier?
I've never had experience with a war wagon, but it seems pretty clear in the rules that it's a defensive unit. Moving it is supposed to be risky and slow, as you really want two successful orders (one to move, one to take up position). If one of the orders is failed and it's caught out of its defended formation then yes- it should be a relatively easy kill. That's an intended difficulty. Maybe I am misunderstanding the issue here?
Goblin Doom Divers being 'too good for their points' doesn't get addressed very well by reducing them to 2 hits per stand. I agree that that change should happen- as has been said, it brings them in line with similar two-stand artillery- but it does little to change how good they are (they're unlikely to be shot, and if engaged in combat it's likely to die regardless of number of hits, so it's kind of a moot point).
The other changes all seem fairly fine. I like Empireaddict's comment on the fixed arc of a Gyrocopter helping reinforce the 'heavy machine' idea, but overall I don't think it's a big deal either way.
On these later comments-
20pt Eagles seem fine to me. I've always found a 100cm move compared to a 60cm move to be fairly inconsequential, and easily countered by the fact that the character cannot then join with units in terrain (being a monster). After that it's simply like the +1A magic sword.
As Lex says, Runesmiths are not Wizards. That's all there is to say there.