Because I want to say this every single day but don't want it to get a drag:
1) The ingame store will only sell timesaver items. It won't affect balance.
2) No, getting to 100 in half the time isn't pay2win. raids don't start until the second week, everyone has time to get there.
4) getting charms faster is also not pay2win. getting those is easy, but not everyone has the time or want for dailies.