Hi. Are there any tweaks for the app switcher that allow a larger number of MRU items?

To elaborate:

When showing the app switcher (via double-tab) there are the four most recently used apps displayed yet the space above the app switcher is unused. I'd like for there to be more rows of apps so that I can easily find and switch/launch apps without scrolling.

I've seen that there are tweaks similar to the n icon dock for the app switcher but these are cramped and not useful to me.

In fact, I'd be quite happy if the whole of the springboard was most recently used, rather than manually ordered.

Does anything exist that might be like this?