Keyword creation from post, persistent keyword linking, & Keyword Phrases

I have three questions/ideas.
1. Keyword creation from post
It would be great when I’m writing a post if there was a meta box field where I could add keywords for auto-linking that would become part of the system. So I wouldn’t have to go into the plugin, set the link keyword, copy and paste the link to it.

2. persistent keyword linking
Whenever I edit a page or post that I’ve already said I want linking to occur, I have to reset the field that I want it autolinked. I’m assuming this is because it has lost the association. I was wondering if there is a way to have it have a persistent linking ability even if the page or post has been changed, it will automatically create the links still without having to go back and enable it.

3. Keyword Phrases
I have a recipe site that I’m using this on, so sometimes my keywords are pretty specific to a recipe and need have spaces in them. Currently, this doesn’t appear to be working. So, if the recipe is “Mexican Rice” I can do rice or Mexican, but not both words. This means the problem is, I might have several rice recipes and several recipes with the word Mexican in them. Being able to use a phrase would make this way better.

Thanks for any help!