There are a lot of good suggestions here however I think it is best if you can post these in the GTM discord server so the dev can see them as I don't believe the dev comes on here much anymore. A collateral increase may help in the short term but not sure about long term.
The collateral increase is no longer relevant, since many developers removed the coins from circulation. They burned a part, they dont sell the rest.
The cost of the node 29 usd, roi - 39%, Commission awards 90.00%, so 35.1% takes service. investors remain -3.9% - the payback of the project at the same price for the masternode = 25.64 years. Who in their right mind would do that? Nah this project.