You're still proposing doubling up all existing jobs though. Whether it's now or later on is kind of irrelevant. As far as what takes the most time when it comes to making jobs I don't believe they've given us any data on the matter.

Realistically? If this was a reasonable suggestion they'd have done it. They've gone on record with the exact opposite, they don't want to ever split jobs again. Which means the costs outweigh the benefits.