Okay to take it more seriously. To make a home defense like situation I would build up a shoothouse. put a sleeping room with a bed in it. The competitor starts in the bed and has to retrieve his firearm from the bedstand or similar storage for a home defense firearm. then has to clear the "house" and find and neutralize the randomly placed target and with a few noshoots placed around the house.
In the early days of IPSC, I think they used to do that sort of thing. All the way to having a teddy bear prop. But it turned into the usual square range thing; two bullets on 5 targets. All about speed, no tactics.
Sadly. Originally 3-gun comes from the three guns a cop normally has in his cruiser. His pistol or revolver, a shotgun and a rifle. Put them to use with transitions on the fly between them. Over the years since the eighties it has morphed into high speed paper punching at 5 meters. So does not really have soemthing to do real live engagemanets anymore.
Another scenario would be starting in the kitchen and when the beep goes opff the competitor has to go and retrieve his firearm from its storage. Or you could start with a concealed carry. then like the other scenario. Yeah, souinds boring at the moment. Maybe randomly put up two targets insted of one, so you have to clear all rooms.
That is the thing. Home invasions usually don't offer enough time to sprint from wherever to the gun safe, much less open it, acquire firing grip, etc. In my current place, I don't worry much about the door getting kicked in, because if they do that the walls and roof will collapse.
Do you live in a carton box?
Even worse, a renter-grade house built apparently when crack was at its peak.