You said this with full awareness that JACS' listing will come along with one of their working product, their VPN, that's been tested for weeks, right?

If the product will be rolling out and then the exchange site will be listing your token too as what already promised in the past.
We know that the product if your main concern but the project can also use dex if the team didn't wanna pay the listing fees.

Will you try to take some supporters as a tester for your pre-alpha product? That will be a very interesting thing to know more about that dude.

I prefer using yobit rather than dex, bittrex,hitbtc,kucoin should be awesome 

then when will you launch the exchange? I think it will not be postponed anymore, if you delay it continuously there will be a lot of people thinking that it will be a waste of time to follow the jacs project without a certainty, and hopefully people will not think badly for this project

As long as the team always provides updates about their achievements it is not a problem and everyone will wait faithfully, but if the team works behind the scenes without updating that will be a bad thing.

yes I know that listing must also be priority, but the team has said that the existing funds will not be used only for listings because development also requires large funds, I am also don't know which project you mention but I am sure if the JACS team will not do the same as other projects

Why listing should be teams priority? If they need funds, they could or already ran sales. Listing is a tricky one. If for some reason the price goes down, it will be a huge hit on the reputation. It can influence on future partnership. Listing would introduce them only to the crypto community, but could also put a huge cross on their future. I think the one who cared more about listing are bounty hunters, trying to sell early.

If I was JACS team, I would release the product first and see if it is demanded or not. If everything is good, then exchanges will stand in queue to list JACS token. That is better than spend funds on listing, or list for free on exchange with low or shady reputation.

This is exactly our strategy that we kept on highlighting over here, Telegram and all our social media channels
Listing without proper demand = Nothing
Only bounty hunters are hungry for listing to dump their tokens but ALL our early investors are patiently waiting for the right time without any pressure on us
We are working hard to launch the final version of JACS VPN App in few days, this will induce the required demand and then we'll focus on listing on big exchanges
BTW, JACS token is listed over a couple of exchanges since the end of its crowd-sale: Etherdelta and a new one called 'Bitskrix' but because there is no demand, things are still quiet over these exchanges

Why do you pay so much attention to what hunters want, investors should be your top priority and if they are willing to wait for product development and launch the whining of some hunters should be less of your concern,
Only a real usage that can drive actual demand of a token, something many projects of this day lacks. Stick to working towards product launch, much better for the project.