Minimizing future space debris is of significant importance because there are no proven, cost-effective methods to reduce existing debris.
The ideas that appear to have the most merit, like GOLD, have narrow solution-sets, like being constrained to low earth orbit or mitigating future debris.
I hate to be a defeatist, but pending a breakthrough in propulsion, I don’t envision much progress in de-cluttering space.
This piece from Space.com is quite excellent in identifying the challenges, which may include a less-dense upper atmosphere.
A less-dense upper atmosphere–although thought to be the same as it was in the late 1960s–might mean slower (by some small amount) deorbits and burn-in.