There will be some volatility at first, but quickly remediated. The developer and the main exchange considered for CREDS, deliberately postponed the initial listing until CREDS build enough inventory to minimize this event.
The CREDS network is capable to add over 1 million XXC on the market, in just one day! Try that with BTC... but, if the demand for XXC is there, of course. One million XXC would be 1 PH of mining for one day. There are over 43 PH of ASICs available, today, in the world. Lots of potential production...
At the moment, CREDs is producing 1000 XXC per day, since we had an average of 1 TH of miners over the last week. This production rate was expected, as CREDS is waiting for its total inventory to build up, before it can be listed on an exchange.
also the more coin has been minted the smaller the impact of the reward-sceme will be. We know from experience that coins are most volatile in the beginning and become a little less volatile after they have been established for a while. So this reward-thing might really not help much.
But i'll shut up now and watch it play out.
for devteaminvolvement: for example devteam neglects the coin over time price will plumet - if devteam on the other hand looks for improvements in the long run (features, updates, services, etc) price will rise. Devteam and/or community makes or breaks the coin. That has more impact on price than the rewardsheme i think.