Eevee Irradiance Volume Edit Mode

An Edit Mode for Irradiance Volumes that lets you place or move points with more precision would be very welcome.

When you use a grid, even a dense one, you get probes stuck inside of objects that you need included. This leads to gross looking results and takes forever to calculate.

The solution is to use multiple Irradiance volumes.

The issue with the second solution is that it's needlessly messy in the viewport, but more importantly each object has its own distance and falloff which scales with the object.

Because the falloff is linear, it's really obvious when an object enters or leaves the bounds, especially when the distance between the inner bound and outer bound is reduced. So, if we need probes close together on the X axis we scale it down on the X axis, but then we need a giant Distance in order to bring the falloff back to reasonable levels along the X.

If we have a lot of probes with short distances, objects flicker as it passes among them. If the distance is too large, the blending looks wrong.

I.E. managing a bunch of smaller light probes as separate objects is very limited. If we could have just one irradiance volume object that we could arbitrarily place points inside via an Edit Mode, we'd be able to get the work done faster from a usability perspective and Eevee wouldn't need to calculate as much stuff. Win-win. Separate controls for distance along the X, Y, and Z axes would help as well.