Is it possible to hook membership packages to items publish page to come even before the promotions (premium, republish) block?
Where membership packages are currently seem to be hiding. I doesn't promote the packages. Users rather see the premium, auto republish blocks on the listing page and then pay small small amount for that. This doesn't help at all.

It's not related to publish process.
You can promote packages on home page, user area (dashboard/profile) or registration page.

It's not related to publish process.
You can promote packages on home page, user area (dashboard/profile) or registration page.

Alright.
Is there a hook we can use to achieve that?

There are some functions but you will probably want some customized solution.