If the crypto market will grow then I think your project will have a good future. But in this period of time, all investors are seeing a drop in the value of almost all crypto-coins. Accordingly, the interest of many ico participants almost fell to zero. And the idea is very good, Central part in the ico and pay only one token ZEON
I am hoping that this project will surpassed investor's expectations and will actually bring them good at the end.

Buying via card, will it be credit or debit? Once you confirm the purchase with the card, is there a deadline for sending the tokens?
Opportunity buying tokens with fiat money can lead new investors into the project. Now many crypto holders have frozen money in other projects or tokens and still waiting for market recovery.
Indeed, I think the more options investors have to pay the better.
That's true, though it's sad to see people not using their ETH/BTC. that's what it's for.