(As a note before I am asked, my own DevEx has not been rejected recently - my friend however had his rejected recently and shared his experience with me)
As a Roblox developer, it is currently too difficult to properly appeal a DevEx rejection as not enough information is provided upon the initial appeal. The process is not transparent enough for a system which is so important for many developers who have a lot staked a massive amount of trust in this system.
The current problem is that the user must email the appeals process in order to find out why they got rejected - this information should be included within the initial rejection message from Roblox and a DevEx approver macro / field should be provided for such reasoning - my friend, for example, had their DevEx rejected because of identity concerns, which could have been resolved a week earlier if Roblox had told him this in the original message.
Instead of being able to target his appeal message, he had to second guess the reason for the rejection which ended up not being needed.
It is strange to have this disparity in appeals between DevEx and Account Moderation, where both are equally as important to some developers.