Well, a shrinking premine is a good thing in my opinion. Though I highly doubt it is accountable for the price pressure. Like Bluestreet already noted, a vast majority of the spends in the first 2 months were due to the funding of project Prime, which ended up to those whom invested in the project. To my knowledge, nearly all of those investors are long term holders.

From the moment I joined Gulden about a year ago, I have always seen the price under pressure. Though, I have also seen it climb steadily from a +/- 300 sat towards a 400/450+, including a block reward reduction in between of -90% (going from 1.000 to 100). So in my opinion, Gulden is doing pretty good  

The price pressure, is far more likely coming from (profit switching) pools and/or unknown identities (http://www.nlgstats.nl/). The addresses yielding, are not traced back in the rich list; so, likely, at least a good deal of those yielded NLG's, are being (insta)dumped on the markets, which could also perfectly explain any price pressures  

Most of the cryptsy traders have moved to Poloniex and there is a lot of btc power on this exchange which leads to pumps and dumps. Being on Poloniex will cause wild fluctuations in price and Gulden getting into traders hands and not the communities might not be a good thing.

Pumps are bad for distribution as more coins end up with whales, a stable price is better for distribution.