stiff surge
This would be extremely useful for debugging the weaknesses of craft, as building ammo boxes and fuel tanks close to vital components can be a downfall for most craft. Could also be fun for players who want to see stuff explode.
I know you can destroy blocks in tools mode, but that requires you to have a direct line of sight towards that block (this requires other blocks to be destroyed too!), which is kind of painful considering you don't get access to block shrinking.
deep raven
Even better, make it a gbs option 
thorny ravine
But explosions are not really deterministic though, no? If you have an ammo box detonate, it's not guaranteed that it will chain to some other random box nearby.
Detonating all boxes on the craft would probably represent a very unlikely scenario for testing.
Shouldn't this include other volatile component either? Like steam boilers.
naive lynx
Either way, I agree with the weirdness in testing these situations
Last I did it, iirc even clipping camera into target position isnt always accurate for debug tools
naive lynx
Even better, make it a gbs option <:rambottrollface:993725944189685771>
Ironically this provides good granularity via name filter 
outer meteor
Could also make for fun 'death condition met' effects too. Ship sinks too far, then the magazine goes up or something
deep raven
Yeah that was my point, I'm mostly joking but it lets you do the same as suggested, but also make cooler deaths, test more specifically, etc