Custom stock status per individual product?

Has anyone written a mod (or can someone tell me how to mod it myself) so that I could use the default "Out of stock" status for my products, but have the option to override that with select products?

For my purposes, it would automatically select my default message, unless I chose another custom message. I'd like to be able to EITHER say just "Out of stock" OR say "Expected in stock on" with a date I enter.

Maybe this is easier than it seems. It might just be some bits of code that add my custom message as a choice, plus display the in-stock date along with that message.

Even I am facing a similar problem. and request to mods to shed some light to our problems.

Whenever the items are in stock, it is showing "In Stock". It would be nice if we could show more stock status at individual product level (when the items are in stock or can be arranged) like:
"Available in 2-3 days"
"Imported"
"Back in Stock Soon"
"Pre-Order"
"Coming Soon"

There is a option to add more stock statuses in my "system>>>localisation>>>stock statuses" but it shows only when the product is out of stock.

But I want to keep the "Out of Stock" feature of Opencart and disable "ADD TO CART" when the item is out of stock, as these two features are very handy in managing stock.

and be able to show the stock status at individual level so that my customers are more informed while making a purchase.

I really need this mod for my store and have given hours to search it.

Thanking in advance to any contribution from any of the mods.