If you are not willing to share your pre-mined coins with the community in the form of airdrop then it gives an easy clue: you want to cashout your premine when the time is right for you. That doesnt give much confidence to the community. Does it? What would be your stake in this project if at all: minimal then as compared to the profits reaped if you dump those premined coins.

If you seriously want to get this coin some attention then you need to shake hands with the community which will work for you and with you. If not then, you are making your intentions pretty clear and obvious, which indeed won't be any good for the growth of this coin. Give more to get more.