Most pow coins rise very high before the halving and then crash a bit after the halving and keeps following the market in general, in my view profitability will stay the same relative to where the cryptomarket is going, meaning if bitcoin keeps crashing then everything will keep crashing, however that doe snot apply to ravencoin right now because speculation on it is high, so I would expect it to keep going up till the halving and after that is unknown territory yet, I say it will crash a little depending how much it will rise prior the halving which I believe it will rise significantly.