The most challenging maps for you.

Give me some advice on which race is best to play this scenario with? And what are the intricacies of manual combat? I only know about Necromancers so far, that skeletons give you rewards after a battle.

Well, sir, you’ve slightly missed the mark with these questions: you should go here! ;) But not in "The most difficult maps for you!"! And start with "High Morale"! ;)
Regarding auto-combat; it’s strange that no one else responded; I would like to know what dnaop-wr thinks about this?! :)
And why bother with manual combat if time is so precious? There's an easier way: press Tab and type nwcredpill. And that's it! :D

quick battles are no longer interesting

Really?! Was it interesting before?
Or maybe this is just thick trolling (and I fell for it)?..
However, the person who wrote this has such high morale - I wonder how they achieved it?