Your suggestions should go on the Wishlist. Whether or not Steven will adopt your suggestion(s) is up to him. Typically he doesn't have enough time to reply to every Wishlist suggestion. If a suggestion on the Wishlist is not replied to by Steven, that's pretty much a sign that, at least at the present time, he's not interested in doing it for any number of reasons.
If a Wishlist suggestion gets a lot of +1s from users, Steven may consider it depending on how much time it would take to implement. Or how useful he thinks it may be. If your suggestion gets no support from fellow users, then there's very little chance of it being implemented.
Comments are my own. I do not speak for Steven.