Probably. Cos these are MOM like features and MOM fans are in the minority
Um, not from what I've been reading...
Seriously, my impression from reading forum threads is more players here are interested in "balance" and the AI challenge more than in the fun factor (except that balance and AI challenge is fun). Hence you see lots of discussions on champion skill trees , which *IS* important but most are ok with the magic side even though it's a bit bland mostly with a couple of fun spells.
Again, I've read a lot of complaints about the lackluster magic. The champion trees are a major problem as well.
The things the OP mentions are definitely fun and adds lots of favour, essentially, the spells asked for, makes it into a real "War on magic", where opponents can counterspell, dispell and other mantipulate other magic, some call this "meta-magic". The problem here is the average Elemental player will say "but the AI can't handle this" or "but it's going to be so unbalanced... cos of ..."
Well, with game titles like Elemental : War of Magic and Fallen Enchantress : Legendary Heroes I guess there are a lot of us gamers expecting dazzling magic and super-buff heroes.
That essentially is the difference in philosophy between MOM and Elemental. In MOM, the main criteria in ending something in was "is it fun? is it cool?", hence you get flying units, invisible units, ability to "Steal" opposing units, craft items, various ways to counter/dispel/block etc spells,
And what's wrong with wanting our fantasy games to be fun?
The AI can't handle all this,
Well, while it's true it take more time to develop a decent AI the more game concepts you throw at it there are time worn "AI cheats" like giving them X free turns to start the game or X% production and research bonuses to compensate. The point is that games need to be FUN or they will not succeed.