Yes, we would like to do that - but of course, there is always a cost. 0.25 BTC is pretty steep at this point for this example  

https://campaigns.masternodes.online/product-category/coin-listing/

In regards to https://p.ginplatform.io/, it is not clear how coins are added.  It appears, that you subscribe and then they add your coin.  That may be all that is needed for someone that wants a masternode, it could easily be done there.