It's easy...
1. Collect real data on suppressors(make a list)
2. Video presentation showing the real difference. Show how easy it is to make suppressors and why banning them from legal purchase is futile and stupid.
3. Make them restricted or a separate license, whatever will fly.
4. Draft legal legislation.(Don't use the word "Silencers" anywhere")
5. Only get Suppressor drafted for 556 caliber rifles and up, no 22lr( I think that would be a mistake and asking for too much).
6. Possible for Pistols calibers of 9mm and up as well, this may be a no fly zone unfortunately.
7. Keep the restricted or a separate lic.
Conclusion
Don't dumb down the debate is the most important step. The video must be detailed and well presented, also it must be very truthful and educational.Get some basic suppressors out there, we may not be able to set the legislation for the suppressor that might come out in production in the future, but most if not all of them out there today should be approved by a rational presentation of there true capabilities and not "Hollywood's fantasy land".
Above all we never seem to have people debating for us that know how to win the media over, this actually easy. This is why i deeply question our gun groups out there.