Yeah i see what your saying, but seriously what is mintcoin useful for? i have had it 2 years now and have never seen it offered as a pay,ent option. do you not think it is completly out of date? i have already sold at poloniex.
not to sound rude but you haven't done your research then... there is a site that accepts it as payment
https://www.coinpayments.net/store-directoryThere is also a special mention merchant list on Reddit.

All of these sites at one time or another, have said they would accept MINT as payment option.
Also, you can use shapeshift to basically instant transfer to any specific coin address.