Sorry Gazz i don't mean place down an item (Bedroll/LC block) that clears out a building for you.... i mean after you have cleared it floor by floor and then place it so it keeps the sleepers from respawning in there after you have locked the place down.I know that this may take some work and i also know that the staff base new stuff on, "is it worth the time and coding ?, how much will it add to the game, what are the good/bad sides to adding such a thing ?" but as i said it's just an idea.
As far as i know (and i may be wrong) the Bedroll works with a Dead Zone of 15 block which runs from Bedrock to the sky limit... so only changing the size from 15 to 40 would cover say... the hotel/apparent blocks. That's my understanding of how the none spawn zone (or Dead Zone) works. So even IF a new item was added that works like this was added it would still do the job of protecting a base bigger than the small 15 blocks.
But maybe it's just my lack of understanding how things work in 7DTD. I see the Bedroll as sort of a Temp type of thing you use while moving around to find a place to call home really, more of a Mobile Dead Zone if you will.
I REALLY don't want to add to your already LARGE workload... really, i just came up with this cus i saw and talked to people that wanted no sleepers spawning in there (what they think) safe base.