Hi!
Pretty sure WORKSFORME corresponds to “Behaves As Designed”, that’s how Mozilla’s bugzilla’s instance uses it at least.
Adding new resolution statuses seems fine, but maybe old ones (WORKSFORME, WONTFIX, INVALID, etc.) should be cleaned up/migrated too, otherwise folks (coming from other OSS projects using Bugzilla) will still keep using them. Maybe they could be disabled.