currency or token ? are they planing to launch their own blockchain ?

I am not so sure but I think they will launch their own blockchain after the token sale ended. That is the make sense thing that I can get.

Is not happening soon the switch to their own blockchain but they are planning to use Graphite if i remember right from the papers

I think of it also, Ethereum network is becoming more congested so naturally it will begin to exhibit unexpected problems. Imho.

even if there are vulnerabilities discovered witihin ethereum, they will surely fork it again

I'm hoping this will happen as well. i'm sick of seeing the network so congested.

I don't see a problem in the ETH Blockchain at current state if it fits for their needs. Ethereum is getting regular updates and they develop and improve the blockchain constantly, so it should be fine. If needed, they always could make a swap later but I don't think this is needed at current state.

And in addition it wouldn't be market proof. Especially for developers that dont have the mindset for a 'public' release work their code as they will and dont consider security breaches, possible backdoors, stuff like that. Its better to improve an existing system until you get to a point where you reach physical limits or have to rework your basics. Its not an easy process and in the worst case your project will fail due to security reasons. Thats not something you want for your coin.

Yah you're mate, whether its ETH blockchain or other, the important thing is that the project can produce a high quality, effectiveness and profitability to the investors. Surely many are awaits on this very ambitious project that requires the combined skills of experts in many fields.  Better health is central to human happiness and well-being.

I don't think it's a good idea for a ETH project to make their own blockchain. it's expensive and takes to much time. ETH is good enough.