I thought that according to Duffenomics, the masternode count was supposed to decrease with increasing price as people checked out. (i.e. the price of the collateral increases to less collateral is needed). Then increase as price reduces as a stabilising action.
As far as I can see the masternode has increased over the last week by about 100.
I was aiming for ~3000 masternodes by mid 2016 based on an return-on-investment bond model. The masternode networks fundamentals are pretty similar to that of the bond market, ROI being comparable to expected interest rates. Currently the expected interest rate of the network appears to be about 16%, as our fundamentals strengthen I would expect that expected rate to actually fall allowing more masternodes onto the network (if people feel less risk in having a masternode, they'll accept less return).