Thats not the right strategy here. Heres what I would do:
Admit mistakes that have been done
Make clear not all mistakes and bad things can be fixed fast
Present a plan and update it how and when to fix the biggest flaws.
Openly talk about plans for future (even if it mean bad news at first)
Only make promises you can keep
Be always open for suggestions of people in here
Most important here is to get lost trust of the members back. Only way is to tell the truth and keep promises.
You hear @voyeur-villa? Thats the way it will work