It's been a couple years since I updated WFH, but there's now a new version available at DigitalRails.com for a $10 donation.
Updates in Version 3 include:
* Automatic removal of ViewDB's
* Ability to select alternate content locations as opposed to only the MSTS folder located in the registry
* Support for multiple placement files (e.g. one for berms, one for stations, one for power lines, etc...)
* Ability to remove all companion objects referenced in a placement file
Used in conjunction with TSRE, it's no longer necessary to use the MSTS-RE to perform a TDB rebuild after removing interactives, as the AutoFix function in TSRE will clean up TDB entries that no longer have a corresponding W file entry.