If Auroracoin becomes widely accepted, its price will jump many-fold from here, irregardless of whether the block reward halves or not. In fact the halving will have a minor impact compared to acceptance. We could easily see a 100x jump from here based on acceptance.
However if users don't have confidence that there will not be fundamental changes to the rules of the coin, Auroracoin will go no where but down.
I don't know if halving is the ultimate mechanism in this case, but it was good enough for Satoshi. I'm pretty sure he would have had the capability of programming a gradually-scaling reward system if he had thought that was best. The beauty of the present method is it is easily understandable. As is PoW. That means players can make decisions and act accordingly. As more complexity is introduced, it gets harder for average participants to act rationally, so they drop out of the system.
The genius of bitcoin is that it removes currency from the control of a group of elites who manipulate it for their own advantage, OR who manipulate it for what they think is 'the greater good' or 'a better way'. We should inoculate ourselves against the idea that we can somehow out-smart the market, and we should be very careful to make changes to what Satoshi has designed in terms of the economics of the coin. Adding features is one thing, playing Paul Krugman is completely another.
Changing the halving doesn't give anyone more of an advantage with mining than anyone else. It actually creates a fairer distribution of coins over time. Additionally, if we aren't talking about "a better way" or "a greater good", then why are we working on AUR, and not just pumping up BTC? If BTC is does things right, then why try to compete with that?
Evening out the halving schedule doesn't change the supply, nor does it centralize the power of control to the deciding few. If anything, it broadens the base of wealth and creates a fairer distribution. It also eases the fluctuations in price caused by halving over the next *nth degree of years. Sure... acceptance is going to create a skyrocket price increase... but what about 2 years from now when we hit the next halving? Are we saying that in 2 years, we won't want the price and chain to be as smooth as possible, or are we hoping for a rollercoaster coin that we make day trades on?
The only argument I've heard so far for leaving it as-is is because BTC did it that way, and Satoshi knows best. The only other reason I could think of is because it's more complicated code. This can't be an issue with the fact that we're pushing a pretty large update to the wallets soon that will have a change far greater than changing the halving schedule.
I'm still waiting for someone to tell my why it is financially or technically more beneficial to have hard halving schedules rather than gradual block reductions that match the mining timeline. Sell me on why it's better to leave it as is.
-Fuse