Sona and the problems with her early game heal

Can Riot please do something about how god awful this ability is in the early game. The cost of this spell is painfully high in the early game, 80 mana to do an "amazing" 30 points of healing. (yes i am aware it heals two targets so the amount is "doubled") this amount is not enough to save your ally, or yourself if either of you get engaged on, and the cost is so high that you can't cast it more then a few times without running totally out of mana. Add to this the 10 second cooldown this spell has and you often will have to hold it in the blind hope that the one time you can cast it will be enough to turn the tide in a fight. You can't even really max the skill first for better numbers because the mana cost increase per rank and with the low base mana regen, you will run out of mana even quicker.

I would like to make it clear i'm not asking for Soraka levels of healing, with high base numbers and super low cooldowns, just enough of a boost to the skill that you aren't forced to pick up something like just so you can afford to cast your heal more then 5-7 times in 2-3 minutes before going OOM. If we can't fix the mana cost could we at least boost the amount healed? Either by bumping the bonus heal back to 1% per 1% missing health, or boosting the raw numbers to a level where the heal actually feels impactful