Logical,
it seems to me that your poisition is a bit harder than the official position of JWs on the subject of blood. Unless I am mistaken, you would rather that no blodd be taken at all - no albumin, no immunoglobin, no haemophilia factor VIII etc etc...That, if I am correct, would indeed be a 'better' position with regard to current JW teaching, as it would harmonize practice with teaching/ But would it have a scriptural basis?
That the Mosaic Law, stringent as it was, allows that blooded meat (rather, unbled meat) be sold to gentiles (who are themselves descendants of Noah and thus under Noachian law) and also that an Israelite could eat such meat under certain conditions with the penalty being simple cleansing makes some point... I do not think it is necessary to rehash the arguments of the bloodreview site.