It really hurts seeing unit that has no upgrades to offer, there are have so many options! Why are dreadnoughts just some cube looking dwarf brawlers!?
Assault Cannons, Multi-meltas, twin-linked Lascannons, twin-linked Autocannons, twin-linked Heavy Bolters, twin-linked Heavy Flamers, Missile Launchers, or a Plasma Cannon
Eldar can run around back and forth and Orks can just rush in. I think like SM are missing that agility, maybe these guys could retread in a formation like in DoW 2 to compensate for leak of movement speed. Maybe they could have a 3-4 slot transporter like in previous titles? Transport version of Whirlwind artillery? Perhaps a doctrine or an upgrade allowing to reinforce at it just like in Ork trukk or previous DoW.
In case you guys forgot, there are these cool melta-guns melting down vehicles. I'm sure I'm not the only one that wouldn't mind them making it back into the game.