But you can already share sub-folders. And then choose which sub-folders or files you don't wish to share from it. Though if you add new sub-folders, you'd need to refresh your shares from the Library.

I would also like to see a wider speed control for different connection settings. I find myself stuck between modem & cable despite using broadband in order to cater for my upload speed.

I won't comment upon the search suggestions. Though you do have a junk filter for true junk spam. I'm not sure I understand point 1 of search phrases.