Below is my imagination, and not representative of any official source.

Delta: What's taking so long with this companion upgrade system?

Delta IT: Umm, we can change the prioritization algorithm. But we have this filter on complimentary upgrades for <Gold, and to fix that will take another 2 months.

Delta: But our DM's and PM's are crying bloody murder over C+ right now!

Delta IT: Hmm, well, they can gift medallion status, right? What if you dropped the complimentary requirement down to Silver? Then we can resolve their C+ issues without fixing the filter.

Delta: Done. Ship it.