making sheen on manaless champions a little more viable

Was thinking what if we gave sheen a way to regenerate some of the wasted gold spent on an unused stat for manaless champions.

Something relatively conservative would go a Long the lines of : receive 5 gold per 10 seconds for up to a maximum of 10 minutes. As such It would only refund no more than 300 gold. Its not a full refund but its a good place to start to make it less unappealing for manaless champions. Sheen is a fundamental part of the game. And "denying" it, or setting champions back who would otherwise synergize nicely with it feels harsh. Namely on akali,kennen, more with regards to lichbane. Or triforce on shyvana/shen. Not giving the discount upfront means they need to at least spend 1200 for the sheen upfront. Otherwise getting sheen for just 800 gold would be op/give too great an early damage spike. Such that they could recuperate much of that setback on their next back. By then the early powerspike sheen gives will no longer be overpowered.