Minion Dematerializer NEEDS a buff

I like the idea of the minion dematerializer. I play champions like Ahri and Brand, and usually I do not have enough damage to one shot all the caster minions (but get them really close) I like that this rune can solve that problem and think it should remain as is but receive a buff.

Firstly, this rune is competing with FREE boots at 10minutes in game (350gold value) and going into debt for early power spike. Doing 4% extra damage and subsiquent 1% more is very underwhelming to minions. I can think of two buffs to make it useful

Idea 1) Same passive (4% on first and 1% on rest) However, you receive +1 gold EXTRA per minion killed of that type. This will help it compete with the other runes that offer higher gold values in this slot.

Idea 2) Just buff the minion damage keep it 4% for the first one and 3% for all subsequent of that type