Mods Weighted brightness control

I would love to use the auto brightness feature however I would like to set it as whatever android defaults to plus 10%. Some may want like 20%. In other words a bit brighter than it defaults to. Would be nice to have a weighted brightness control. Could get fancy and say in dim light +- x% medium light +- x % bright light +- x%. A basic control of +- x% for all lighting conditions would be nice. In dim light I always need to adjust up a little, maybe 5 or 0 %. Anyone else have this issue or desire?