Because downranking wasn't supposed to happen. But it did and it was too late for major changes then.
I was asking you why they let us keep the lower ranks of the spells at the start of the game (WHEN IT BEGAN LIVE OKAY) instead of the higher ranks replacing the lower ones.
If downranking wasn't supposed to happen, then why did they make spellcasters different from the melee classes in this regard?
Because the lower rank spells were supposed to be used to conserve mana. There is no other fucking explanation you can come up with, because
there is no other reason why Blizzard would make spellcasters (JUST THEM) the only ones with the ability to select multiple ranks. They all have multiple ranks because each rank uses a different amount of Mana, there is no GOOD REASON if Blizzard themselves didn't intend for people to use the lower rank spells to be used to conserve mana, that they wouldn't give spellcasters the same system as melee, just have the mana cost change. None.
They gave spellcasters that option for a reason.
Now they're removing it because they can't think of an elegant not-stupid idea that isn't pandering to the PvP community to stay and play and not go to WAR. This is about as inelegant as you can get. A Rank 1 spell costing more than the max version of the spell doesn't make sense at all, not just from a sort of lore stand point, but just from general basic thought process and design. I mean dude, it's like a normal pistol in real life costing more than a modified AK-47 or something. It doesn't happen because the pistol is cheaper, less effective, easier to control, less chance of being used the wrong way, less chance of being used for a nefarious purpose, etc. Pretty weird analogy I guess but you don't expect weaker stuff to cost more
in anything because it doesn't make sense at all.
Now if you can give me a good reason why spellcasters were
specifically allowed to be able to use multiple ranks of stuff from Day 1 (and beta....) yet Blizzard didn't want people downranking, then I'll be amazed.
EDIT:
Also merging all the spell ranks would take less than 15 minutes to do especially considering Blizzard stresses good programming etc. And also they do a major change like every few months (well not now, expansion time but generally), and merging all the spell ranks isn't a major change compared to half the crap they do.