Outdated Raids

[SuperZay]

1. "You take a ready code from Trials Roulette and copy it" and hopefully get fired for your horrible practices.
2. That depends heavily on how it was implemented. What you described refers to an ideal implementation of the system (making the relevant code generic, and easily accessible, for starters) which is not guaranteed.
3. That would still require development time and then, more importantly, testing.

Yeah it's not new content that needs to be checked from scratch but it still takes time and we have no idea where it stands in their priority list.

Get fired for what? If you are not familiar with programming, you don't need to rewrite all the code from zero if you want to add identical, copypasted feature to something, you copy a part of core code and alter it as needed. Rather, you'll be fired for rewriting all the code because you'll not meet deadlines.
For example, Mentor Roulette already has all 6 raids in it. For Raids roulette you take that ready, tested, working code and delete all entries which are not these 6 raids, adjusting it as needed so everyone can participate and not just mentors. Raid Roulette code ready.