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.
But the rewards should not be too high. Look at LBRY for intance. The coin just crashed..But now the mining reward is decreasing slowly, and the price on the exchange will pickup.
I will launch a big coin soon. Make sure you mine with me in the early days.
Pure POW, No premine, Fair launch, fast optimized opensource GPU miners at start, No bullshit.
New algo? If so, that would be weird as you'd be incentivized to keep a highly optimized miner to yourself and release a much slower one.