Hi Mats, your arguments remind me at those of Ed Trice. This is also true
for basing piece values on 'save' king threats. But I have to insist,
that tactical considerations have nothing to contribute to average piece
value calculations. There are of course board situations, where a Pawn
could capture a Queen, but that is completely irrelevant for those
figures. In a similar understanding end-game considerations are highly
influenced from tactics, thus conclusions basing on table bases are merely
of partial value for fixing average piece values as needed during the whole
game before.
P.S.: using SMIRF's 10x8 values a Mammoth or an Archbishop both are about
equal to a Rook's value + one Pawn unit or equal to two Bishops.