So you are saying that the sole reason for inserting LoS blocking terrain as blocking the fireball, whereas orginally it specifically stated that LoS did not block LoS was to prevernt it being used to knock units out of forests and the like?
I take it that the fact that the fireball doing this along is miniscule at best didn't occur to you? I mean first of all you need to be able to cast the damn thing, and if you're doubling up on spell-casters then you've sill only got a roughly 50% chance of doing this. Then to hit anything you still need 5+, and then of course you need to do at least two wounds to even start rolling any drive back dice. So if you do manage to cast it at say a nice line of three units in a forest, you are likely to score maybe one hit against each unit, and therefore have no effect whatsover...
As to firing into HtH combat, it was designed to do so, otherwise it wouldn't be specifically allowed in the rules. And I can think of much, much more effective spells that the fireball spell. That beastlord thingy that the DE's have got for one, never mind summoning undead, and of course the 'lets have a another shot' spell for the HE's, never mind the fact that HE spells are almost universally all cast on 50-75% odds, as opposed to most armies that have two 33% odds spells, maybe one 50% spell of marginal effect (although when used en-mass can be very effective. Imagine a whole brigade of Chaos Knights hit with weird enchantment. But then the Empire only has one wizard for every 1k, the real magic-heavy hitters are those with magical generals or like O&G's two spell casting characters per 1k) and possibly one really nasty (like that chaos combat spell) 16.6% odds spell...
Basically this rules change looks very much like someone was fed up with being fireballed when hiding in a forest, and no-one pointed out how stupid an idea it was to change the nature of a spell that had been working perfectly well up until that point. I can honestly think of no other reason why this change was even suggested, never mind put into place, but then I guess that this is what I get for taking my eye off the ball whilst concentrating on WMA and RL concerns taking centre stage...
Gosh, I'm sounding like a right grumpy old git aren't I? Anyway, just basically voicing my absolute disagreement with this. Changes to the ST I can take or leave, as ultimately I can always just leave it in my figure case as I have done since the game came out. It's still not a useable unit as it stands, neither in the original rules or the updated rules. This however I think may be as much a function of the over cost-effectiveness of heavy cavalry than anything else, the same is true of most infantry. And these two issues will I know never be really resolved unless we can get a 2nd ed. And we all know the chances of that happening are, well I'm more likely to win the lottery, and I haven't bought a ticket in at least ten years...