I believe that this post assumes that the Guild is trying to test it's strength or some other such stuff when allied with other subhouses. If not, the smugglers aren't considered a subhouse by Emperor OR the Dune books. They're just there. They'll provide ANYONE with enough solaris, transport anywhere. As for the Emperor, he was already assasinated by that Lady Elara, consort, remember? But House Corrino is one of the great houses. Kinda intresting, Sardaukar vs. their master. As for the guild NIAP? Please, that thing is almost worthless. Sending in airdrones completely wipes them out. Those Tleilaxu Living Turrets could be a different story though... I say that it would most likely be a long, tough battle. It would also depend on whether or not the great houses allied with each other. If they did, the great houses would probably win. If not... Atreides would probably win, if they build proper anti-Guild defenses (check out emprworm's site, the slide show on that works) and deployed scouts in front of ramps, around spice fields, etc, etc. They would have to be using super defensive strategies to win. Slow advancing, setting up fortified areas on and around infantry rock in the sand, and multiple bases (if possible). Ordos probably wouldn't, even if they built great Guild defense, their sheilding is their doom against elite Sards. Leeches would get harvys, then Fremen Feds and Sards would annihilate any other units, and then would help the Guild to destroy defenses and the base. Harks could really go either way. I've played the least with them, so I'm not an authority, but they could win. Buzzsaws tearing up their fields, Inkys to kill many infantry, protected by buzzsaws and missile tanks. Flametanks and infantry would be useful there too, since the subs are mainly infantry based. Of course, scouts around ramps, spice fields, and any group of units. What do you think?