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.
If things won't be improved considerably within next three months, I think we might witness a true degradation of masternode ecosystem, and masternode hosting platforms will be dramatically affected. After the shutdown of GINcoin masternode hosting platform, Gentarium is surely the biggest one in the branch of crypto industry. For now, I have not yet see any real competitors with Gentarium, so if the platform won't see considerable recovery and growth expansion in months to come, it will become so hard to say about the future of Gentarium platform in particular, and of masternode hosting industry in general.
Sorry, but saying there are no real competitors to GTM means you either havent looked around at other services or youre blinded by your loyalty to GTM.
Have you looked at ihostmn.com service? They have now passed GTM when it come to the number of nodes hosted. They also have a shared MN service.