1. Why is the maximum MP for Beastmasters and Witches equal to 1700 (which corresponds to SCS = 6)?

The tests were conducted on TE (where you can see the numerical values of the movement reserve), so there may be discrepancies here - if SoD and TE have different source files.

1. Sorting does not affect the columns with percentages, which leads to amusing results: for example, after sorting the spell level in ascending order, the probability of Haste appearing in Inferno becomes zero, etc.

You just need to select the entire range (the entire table) for sorting. Then everything will work correctly - you most likely only selected the first two columns, which led to the distortion. This is a feature of Excel, so all questions should be addressed to a certain Gates... :)

The image is in the archive (see the attachment, the image can be enlarged).

Where exactly can I see the archive?

b) The distances on the battlefield are not calculated in a completely standard way.

How exactly is this calculation done?

Added 10 minutes ago

1. In the properties of artifacts for diplomacy, the description says Diplomancy +x. In fact, these artifacts simply reduce the surrender price and nothing more.

Yes, of course... I was transferring this from an old archive - there were times when the effect of these artifacts was not entirely clear... :) I will fix it.