I play quite a bit with Soraka and I'm a little intrigued. As it stood, since everything sat on her W, there was little reason to level up her other skills. Some people picked her E to cut down on the cooldown (since it technically does the same damage as her Q but more reliably) while I usually prioritized her Q. Skill order won't be as much an issue with me as it would be for those that leveled E instead. Don't get me wrong. I understood why people preferred to level a skill that never went up in mana, increased in damage and significantly reduced in cooldown. But for some senseless reason I have always liked poking with Starcall and I'm only losing 5 more mana per rank.
Also the healing brought in by a Q is the same as consistently hitting two champions. They doubled her self heal while cutting her early game healing on allies. If we are looking at the numbers, it won't be until Soraka hits level 7 that she is healing the same as her former level 7. Early game trades won't be as much a lost cause.