Many GP clients have a lot of inactive GL Accounts that print when building, say, a Trial Balance. These line then have to be automatically hidden, causing the report to run more slowly. GP has a flag in the GL00100 table that indicates whether an account is active or not. I assume this is also one of the tables the GL function goes to to get replicator lists, so this should be quite simple to do. 
As of now, I have to train clients to use the NL Function against Jet GL Account to allow them to add an Inactive filter. While this is not all that difficult, it is an extra step that makes GP users experience of onboarding the product more complicated. This would meaningfully improve GP GL functionality.