Jaydee, I will try to sum up my take on a hypothetical test regime, someone kick me if I'm wrong.
You asked, "What are the minimum measurements needed to make a decent review of a block?"
Mount - remount 10 times (more?)
(10) quantify mounting presure for each
describe tim application
(40) 4 flow rates each mount
(40) 1 water presure measurement per flow rate run
(10) voltage and current measurements to quantify applied heat (steady state)
(80) inlet temp, outlet temp to verify steady state water temp (use as mounting indicator also)
(40) die temp reading (.01C res, +-.05C accuracy)per mount per flowrate (that's 40 more temps if you're counting along)
(40) bp reading (see above)
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260 total readings per block
Take the results and present them the way you want. Block A vs B or get anal with presure vs flow rate charts, mounting variance charts and all that. Now you have reproducable data to back up your claims assuming you have the equiptment calibrated correctly.
The multiple mounting verifies the comparability of tim joint application (error bars) and allows the calculation of an average bp temp measurement of the ten mounts. This is also where cross test platform comparability would suck ass. YOU could reproduce the results (get the same average) but your technique in applying the tim and mount presure will never be the same as anyone elses no matter how many words you use to describe it.