[Spoilers Episodes 1 - 4] Leaked Episodes Discussion

Because the mods of the two main aSoIaF subreddits are being draconian morons about this, I figure a discussion thread somewhere on reddit is good.

What do the changes from the book that we have seen in the first four episodes actually mean? The way I see it, the two big changes that have meaning are:

1. The real Sansa Stark going to Winterfell to marry Ramsay.

2. With Varys being Tyrion's travel companion, it is really seeming like Aegon is not going to be in the show. I assume this means that any theories about him surviving the dragon fire is kinda dead now.

Edit: And just because liability is apparently a thing, and everyone else freaking out over it makes me think I might be underreacting...Don't post any links to copyrighted content in this thread or subreddit.