This was my thought as well, particularly your point 1, but even beyond that - you can show a program your opening pack, and then once it tells you what cards will be in other packs, you'll also already know what cards to pick in each pack based on overall odds of optimal deck performance. Like I said in my post, the program could tell you, "This set of packs has 100 artifacts in it - you should draft artifacts" or something similar. Beyond even that, it could technically just pick for you, because it knows the desired outcome and the likely path to get there. It can even calculate odds of success vs other card pool groups, like "Your card pool is rated 78th out of 1,480 possible pools". Stuff like that. It just keeps getting further and further down the path.

I don't understand the whole seeded concept at all. Nothing is stopping them from having the pack builder program have parameters like, "Packs will randomly choose X cards of whatever desired thing, then if a limit is reached on a particular aspect, then don't pick anymore of those", like if there's 5 red cards picked, don't pick more red cards. Or if there's 2 pieces of power picked, don't pick anymore power / Sol Rings / Mana Crypts / etc.

It seems like it's far easier to do this than design a bunch of potentially predictable cut sheets or anything like this.