Why there is ANAL button?
To appease those who were bitching for a bigger disclosure. However appeasement has its limits, as Britain's Chamberlain should have found out. Also, it is a great debug tool.
And Vikings weren't pirates, despite what name suggest. They were raiders.
Maybe the gals are raiders too, despite what name suggests. This is a
Science Fiction game after all, not a reenactment of any historical period.
Why there is diary of every gal, that allows to track every mission in the game?
What the diary, of all things, has to do with it? It is just a record of deeds past, not tactical info feed.
Since scores in order of 30k or 40k were not possible in OG,
Completely possible. Just wait for 5 or 10 alien bases to appear and milk them.
I am assuming that you have greatly expanded list of events that cause gain/loss of points.
Your assumption might be right or wrong depending what you assume. New events? Sure, tons of them, like many types of "terror missions". New
kinds of events? No.