I think that the investor will be able to make a decision to participate only after the opening of Sales. During this period the whole potential of the team and the proposed product is revealed. Now this remains at the level of discussion.
In order to show their potential for investors, the team should actively communicate with their community. Without many answers we will not see all the advantages of the product.
The promise of development must be confirmed by effective action on the part of the developers. The most obvious proof can be the presentation of the beta version.