Multi category view

Hi there!

I've got a very importatnt for me question, about menu item.

I very need to add menu item, to the same view like 'Single category' menu item (it shows posts from one category and subcategories), but to many categories.

I know, that it's not possible now using standard EB menu items, but how can I hack the code to achieve this view?

I thought about adding new view -> multicategory in controller.php, but maybe is some easier way to add menu item which leads to blog entries from many categories?

At now, I have made one main category XYZ and in this main category I have made a few subcategories, which in result is what I need -> it menas that, I have made menu item "All posts" and it provides me to XYZ with subcategories.

But I need to have flattened categories three, without XYZ.

I know, that this view I can achieve by making menu item linked to 'Frontpage', but there is very importat for me difference between 'Frontpage' and 'Posts in category view'.

I mean, that I need two menu items:

#1 menu item to 'Frontpage', where I can show every post included posts with enabled option 'Show on frontpage'

#2 menu item to 'Posts from multicategories', where I can show every post EXCLUDING posts with enabled option 'Show on frontpage'.

So I need to make menu item linked to many categories and their posts.

I'll be very grateful for your help with this thread!
Best regards!
Adam