So scan profile would give an explosive resistance?

Seems odd.

How about scan precision instead? Can be explained by the suit detecting the explosive and redirecting suit defenses to face the explosion.

Though even then, still seems kinda strange.

So you're seeking to give an advantage to people using signature dampers and scout suits. I understand you want your scout to survive a grenade, but your idea would turn every anti-personnel grenade into a heavy destroyer.

Missile damage in Eve is based on explosion velocity vs ship speed. This is why speed tanking works against missiles. A frigate sitting still doesn't have a larger signature than the moving one, yet the missile with hit the stationary frigate just as hard as it hits a battleship.

Signature radius has little to do with missile hits and more to do with turret tracking.

While I love where you are going with this idea, I don't think basing it off of our signatures is the way to do it.

In EVE, explosions use a stat called Explosion Velocity, basicly the faster the explosion, the more damage a moving target will take. Conversely, moving faster will have you taking reduced damage.

So instead of damage based on suit sig, lets use the speed at which your suit is moving. Stationary targets take full damage, and drop it off from there. So a speed fit scout suit could literally run through a field of explosions, taking minimal damage.

Damn, that paints a sexy image in my head

I've been playing Eve for about four years now and I know from experience how missiles work. I know that damage application from missiles is, as I have said, explosion velocity vs ship speed. If signature radius had anything to do with it, my Navy Issue Drake wouldn't do the same per missile damage to all types of stationary ships providing equal resistances. If signature radius mattered to damage application, then even when stationary, smaller ships would take less damage, which they don't. The only thing that modifies missile damage when target speed isn't a factor is the resistances against the missile damage type.

If signature radius is a consideration for missile damage, then it's probably the unmodified base signature radius of the hull being used as the gauge for base ship size when determining speed VS velocity for the percentage of the ship caught by the explosion.