Either path seems like a maintenance nightmare. Are the client requested customizations primarily chrome/look & feel or functional changes to the product? Are

Either path seems like a maintenance nightmare. Are the client requested customizations primarily chrome/look & feel or functional changes to the product? Are these customizations features that could or should be merged back into the mainline product? If the underlying app or plugins change who pays for validating the changed code in re-deployments and fixing any problems caused by the updated code?