is there a 'destroy on start' feature?

other than destroy in start of layout action, is there one like there is an invisible on start?

Like Destroy on Startup, maybe?

yeah, just like that!

Or you could make an event that changes an objects opacity to 0% on start of layout.

System>Start of layout

"your object here">Set Opacity> 0

If you set opacity to 0 the object still exists, and is still processed by the GPU.

If you "Set visible" to invisible, it still exists, but is no longer processed by the GPU.

The Destroy on Startup attribute is the most efficient way to get rid of any objects that you don't need right away, you can always spawn or create them later at runtime.

Every object which displays stuff should have an 'invisible on startup' property; stick a quick item on the feature tracker if not.

System>Start of layout

"your object here">Set Opacity> 0

Just want to reiterate what Deadeye said: this is a really bad idea! It will waste rendering time, use more memory, and slow down collisions and the event engine, if you did it with a lot of objects. If you don't need an object, destroy it! If you don't want it shown, set it invisible!