Value, respect, and strive for diversity in editors

Actually we could put this into into a formal algorithm like this one: if the deletionist believe an article is below quality minimum its tagged and gets a long time (like half a year) to get over this minimum quality. If it hasn't jumped over the minimum by then it is transferred to the archive. Actually different quality classes could deliver this right away. If somebody only want to look at class A articles he might restrict his own view on wikipedia to only class A articles.

The rationale behind is: server space is cheap and getting cheaper everytime. One can afford to keep almost everything easily. However not everything is equal, not an measures of quality.

I agree that time can be a big part of getting deletionists and inclusionists to work together, and balance quality and scope. Rather than putting things to a vote, you flag it as a concern, and depending on the article you give time to address the concern. Controversies and hoaxes would get very little time because they can damage Wikimedia's reputation, but more neutral content might have more time to improve. Newer articles might get more time, but articles that have existed for a longer time with no improvement might get less time.

Of course, we can't just force this compromise down peoples' throats. But I suspect that if you locked inclusionists and deletionists into a room together and didn't let them out until they compromised, they might agree upon something like that.