You know it's a shame some of the bigger old coins are unprofitable to mine now. While they have a pretty healthy trade volume, their blockreward reached a point where it's not longer profitable to mine. Feathercoin for instance has healthy trade volume every day, but easily gets saturated by a handful of miners. Cryptonite is also in this boat.

Conversely, if emission is too high in smaller coins that don't have healthy volume they're easily crapped on by miners dumping minted coins.

I've thought about this over the years I've been mining. Someone really needs to release a adaptive block reward that relies on healthy trade volume. So if the coin is starting to die, the blockreward goes down and reduces emission of coins and keeps supply steady and of course if the coins is flourishing, it increases the emission to a certain extent. Volume is just an example, obviously more factors would have to play into this then just daily volume.

That is a immensely complex problem, but definitely could be done. No one has tackled it yet though.

Literally a idea for a big coin in a nutshell right there. Quote this post when it happens.