Chosen Solution
I saw this post just after asking the same question ! But if the “Dual Hard Drive Kit” provided by iFixit is capable of plugging a second SATA drive with a specific cable, could not the same cable (or a close cousin) be used to connect a DVD drive ? And how bad is the angling needed to slide in the logic board when the optical drive bracket is present ? Does it brake anything or is it manageable ? Likely, the best solution would be for iFixit to provide an “Optical Drive Upgrade Kit”, as they did with their “Dual Hard Drive Kit”… Anybody listening here ? ;-)
There’s room for a hard drive but not an optical drive.