Lack of interest Watched content and finding new posts (multiselect Watch, search by filter Watched, custom filters)

[Phantomato]

Hello!
I am not a customer, just a simple forum user. I hope it is OK for me to post a suggestion.


Main idea: as a user, I want to find new posts from a specific multiple forums.

It is possible with "Watch" forum and search for new posts by selecting filter "watched". But to do so I need to manually select "watch" for each forum and its sub-forums and later to do it again for all new (future) sub-forums. It is problematic for a big and expanding forums.
(I am not sure if I am allowed to post links to make examples)

Suggestion:

1. As a user, I want to select multiple forums to "watch" from one page so I do not need to select "watch" for each forum manually.
2. As a user, I want to "watch" automatically all new sub-forums of watched forum by default so I do not need to manually select "watch" forum for each new sub-forum.
   OR:
   As a user, I want to have a setting to (not) "watch" automatically all new sub-forums so I do not need to select (deselect?) "watch forum" for each new sub-forum manually.
3. As a user, I want "Filters" to be more noticeable so I actually will know this feature exist.
   Personally I learned about it after searching for related topics.
4. As an administrator, I want to create custom filters for specific multiple forums so users can perform search for posts from those specific forums by selecting custom filters.

And I am sorry for my English.