Bit of a long shot

An option to do a quarry mode, rather than pit mine.

1. Mine height above Tower to 0.
2. Place Retaining walls with ramp (Wait)
3. Mine 5 layers of selected resource

Repeat 2/3 until enough layers is complete.
Possible optinon to reverse and dump from Assigned Inputs, remove retaining walls for that layer, then repeat.

Calculating the layers needed would be a cha…

I've got the same issue with Poppy seeds.

I used the Cheat++ Explore World command and it didn't provide the poppies with it.

Maybe it needs options to give any world found tech

The corner designation works well to get the maximum ore without excess rock/dirt, but it bothers my OCD.
Is it possible to have an option/flag to prefer vanilla designations?

Pretty much. Ideally, any mine/dump designation that is complete could be auto-removed.
But limiting it within the Mine Tower's influence would work too

Alternatively, a full 4x4 section to be cleared if the surrounding 8 sections are fulfilled

It'd be handy to auto-clear designations if the surrounding designations are also fulfilled.

With 3x3, the center is unlikely to have spillage to make it unfulfilled (Maybe sand?)

This would allow it to auto-clean a mine site