In reply to Justin Tadlock.

A good suggestion to design against the plugin.

However, as a theme dev, I am trying to gauge a lifespan of themes as they are today; how long they will stay relevant as WordPress continues down the path they are going. I'm still thinking about theme shops and marketplaces, in general, as to how long they/we have before themes of today are no longer compatible with WP. More so with end-users who are not really prevalent in the future of WordPress and to know that their theme may not be compatible in the near future.

2021 is really not that far away, less than a year.