i want my old anvil march back (boo-hoo)
i want bound spells in items like ironbreaker/hammerer/irondrake unit banners.
i want runesmiths with bound spells in items.
i want a zeppelin troop carrier.
i want goblin-hewer, goblobber, and fire throwers back.
i love shield-wall, it is a great alternative option to GW.
i love new gyrocopters, and bombers (the price and rules, not the models)
i would love most of all a dwarfen version of the mangler-squig/goblin fanatics made of steel, steam turbines and axes to decimate the enemy lines before the dwarfs went into close combat.
As Karak Hirn clan player I would like to see more units for conservative dwarf holds who do not favor engineering guilds as much as many other holds do, that would diversify our army stratagems a bit more.
And do not see dwarfs' cavalry, no rams, no damn ponies please, no mechanical mini-copters or ostriches
Flying transport will be too much for dwarfs in both rule wise and lore-wise aspects. Rule-wise it's too game-changing option, some serious limitations would be required, fluff-wise - who will find enough crazy dwarfs to fly on that thing? Gyrocopter corps are low on volunteers for pilots courses, speaking not about passengers, pfff, dwarfs have no business in the sky.
I would suggest some engineering mix of steam tank and mining-drill tunneling-machine with transport capacity - good 'ol underground digging, without crazy ideas of flying. Some upgrade for master engineer, I think. Imagine it popping out from the underground on the turn 2-3, unloading angry dwarfs and continuing to mince enemy troops - priceless!
If transporting troops is too much I'd suggest roadheader instead of tanks.