By "raise" I mean those guys are All-Defense and come out below the specified floors, so they are raised to that floor level. For example, if Dumars was generated a 30 rating for some season, but was 1st team All-Defense, we'd raise his rating to 80 or 90 or whatever we settle on for the floor values.
The floors will be standard based on the level of All-Defense (1st team, 2nd team, neither but 8 total votes, or none of those but 1st or 2nd team in another season). So there is no subjectivity there beyond what's inherent in using All-Defense voting.