Hi,
This is how our VM Template was designed. Frontpage only includes the 1.level categories and the "Featured Products", "New Product" and "Best selling" product (depends on what you enable through VM Configuration).
See the VM Frontpage in our DEMO:
demo.flexiblewebdesign.com/lightmart/index.php?option=com_virtuemart&view=virtuemart&Itemid=520
We don't have those extra features as we have for Category Browse page. Because Frontpage is not as important as the Category Browse page. You can open aecommerce store without using VM Frontpage, but you can't live without Category Browse page.
So, i would suggest you to skip the Frontpage and manipulate the Category Browse page and make it your VM Frontpage.
Create a 1 main category, something like: "Shop". Put all the other 1.level categories into that "Shop" category as 2.level categories.
Then by using the "category" feature, open that "Shop" category within category browse page. This would be actually your VM Frontpage, but with using Category browse page layout.
Regards.