I guess how this “should” be taken care of will differ depending on who you ask.

Imo, how it should be handled is a call tag is sent to pick up the block, and a “non-defective” unit should show up as it’s replacement.
I look at the hemi oil drain holes there as something that would classify that one as a “blem”...... which would be sold as such, at a discounted price, with the buyer aware of it......... and that’s after the head bolt hole situation has been rectified.