I think why yes and why no should be argued in short and clear statements so everyone can vote accordingly.
IMHO, for now I think yes,
because at the moment daily buy support is not enough for miners daily dumping.
So I think it's not about coin number, it's about daily required buy support to keep the price stable.
and there's 2 ways of keeping the price stable;
1-) Lowering the number of darknets mined each day
2-) Promoting darknet more effectively to increase buy support
First way is more doable for now, and first way can be done in two ways;
1-) Lowering the number of darknets that will be mined at the end of pow phase
2-) Keeping the number same but extending the time of pow phase
Summary: daily produced darknets should be lowered to average daily buy support.
Sorry, but a vote to hardfork the coin to lower supply, with the end goal of matching "daily buy support", seems incredibly inefficient and shortsighted to me. If that's what masternode holders vote for, then I guess that's what they'll get, which is fine.
But think about what you're working toward for a second. The differential that creates the decreasing price of daily buy support is currently from speculators only. There's no major use-case drivers beyond the masternode system decreasing available supply, and PoW mining increasing it. PoW mining supply has outstripped current demand for masternode-creation buying.
Speculators by definition do (or should) not give a shit. They see a potential increase in future value and set buys accordingly. If there is a better deal than DNET, they will pull their bids and the buy support goes away. They are seeking profits irrespective of where those profits will be found.
So given that, why would you cater to the speculators' fickle buy support, which could increase or decrease at any time for reasons completely urelated to DNET, by making fundamental changes to the supply? You want a short-term price bump? You don't like seeing the value of your DNET decrease vs. BTC in the short term? This was the whole point of a full year of PoW: to allow a long period of time for good masternode distribution amongst many discrete individuals. Holders of many MNs early on aren't interested in getting that one extra MN at marginal cost, but new DNET users are interested. Price action SHOULD be a slow, boring decline until we get closer to the transition from PoW to PoS, during which long-term speculators will accumulate at ever cheaper prices alongside the slowing number of new MN entrants.
To be clear, YOU SHOULD NOT WANT A STABLE PRICE until PoS kicks in. From the day of the DNET ANN's posting, this long PoW phase has been priced exactly as it should, given the coin's criteria. This is the predetermined accumulation phase. You should be accumulating, by mining or buying ever more cheaply. Protectionist voting to decrease the PoW emission, in order to preserve the vs.-BTC value of your DNET investment, was an unsound investment decision.