Will the new algorithm make mining more profitable? That's the most important question for me
as a matter of fact that is a very interesting question. and i believe the answer is no. the profit should theoretically stay the same no matter what the algorithm is.
think of it this way, all those who are mining bitcoin with current algorithm are going to continue mining bitcoin with new algorithm. so the reward (1800
BTC/day) is still going to be distributed among the same number of miners with nearly the same share of the hashrate.
in short term we may see differences during that transition but the end result is the same!