My dream shotgun would actually be something like the OICW, only with a 12 ga. bullpup 6 shot,magazine fed, instead of that ridiculous 20mm computerized thingy. .223 rifle semi-auto rifle underneath. Pump action SG, pump riding on what would normally be the handguard of .223.
Two triggers, back one for SG, front one for rifle.
Selector switch/safety for 1. safe 2.rifle only, 3. both, and 4. SG only.
.223 based on the action of a Galil only lighter, takes STANAG mags.
Vang comp shotgun barrel.
Around 10 pounds.
A combo shotgun/rifle that doesn't suck like the Crossfire.
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And for all of you guys looking for tripod mounted super scatterguns, I remember reading about a gunsmith who welded 2 1187s together, a left hander and a right hander. Both had extended tubes. It had a spade grip, was mounted on a tripod and fired both guns every time the trigger was pulled. One gun usually had slugs and the other had buckshot. Kind of cool.