I personally don't think that a summoner spell should be countered by 35 gold.
Ignite has been one of my favourite spells on a lot of champs since I started playing League, but it seems it has gotten to be useless since it's tweaks and the changes to heal last season.
By now everyone has figured out that you can just about negate the effects of an ignite merely popping a health pot. I don't really think that an entire spell should become null solely due to the cheapest consumable in the game. I don't care if they are saved by a heal or summoner heal, because that at least pops an ability or a spell for a spell.
I don't think they should change the reduced healing on it because that would be WAY too strong, but I think it should have something like "applies grievous wounds and reduces the effects of potions by an additional ~20%."
I don't know, I just don't think a useful spell like ignite should go the way of Revive. Just my opinion though. Comment if you agree or disagree.