People, masternode collateral will not be changed. There re dozens of people in our community who have been collecting DMD for years in order to be able to start a masternode and this reflects a true nature of DMD being a long term, stable source of income for many, many years to come.
It is not and it will not be a get rich quick scheme. Due to this stability and devotion DMD price s been going up and we have maintained price stability even in this FUD crypto times.
Having said this, there is an alternative to running a masternode, just run a simple PoS. True, masternode earnings will be a bit higher but this is not that big difference, so there will not be 300% vs 25% difference. I d say the difference will be under +5% for mastenode owners and all this is just my personal assesment since it depends on the number of masternodes being run.
I d say we ll have around 100 masternodes so there is no fear of too few of them being around.
All in all, whichever option your choose, either staking DMD or running masternode(s), you will be making money. So there is really no need to be unhappy about this since we try to desing DMD to be profitable for everyone.
I do suggest you join our slack channel, here is the invite:
DMD Slack
Slack Invite 
Cheers and thank you.