I have to make something clear here, people on this forum are not casual players, most players never go to forums, even less post on forums.
Secondary, most people would only play this game once and whatever they going to buy next Lucian or recommend this game or not will depend on this one playthru. So all the people that played some place like 10 times and because of that think that it is easy don't realy get this topic.
And in a patch or two the 'explorer' difficulty will have a tool-tip which says 'Casual players, click here!'
Classic will say 'People who are familiar with D:OS or turn based tactical combat click here!'
Harder will say 'prepare to reload worms!'
And none of this thread will matter anymore.
As to the second point, do I get this topic because I only fully completed the alpha once but still disagree with your suggestions and OP?
I have to say, I feel your pain, I play with my partner and she disliked reloading when we lose a battle. It has happened, but it never 'ruined' the experience. If anything it has sharpened it by making the battles more meaningful and our actions/preparation more important. So now she sneaks around and asks me to quick save often and unlocks here characters from eachother to spread out.