Entities names are derived from their tables names as Roo doesn't provide an interactive wizard like Eclipse does, however, if you select all the defaults in the Eclipse wizard the entities are also named after their tables. So there is nothing else I can do, reliably anyway. I don't know what you would suggest different. It would not be practical to attempt to provide up front a list of entity names to try to match to their tables. A DBA could remove a table or rename it and you would be stuck. It would be a maintenance nightmare. DBRE can now cope with database refactorings quite easily.
In the all the large enterprises I have worked in, the development schema, when requirements and design are done, is replicated through test and production. We also have to support other ORMs besides Hibernate.
Please be reminded that DBRE is there to make your life easier when dealing with existing schemas. You are free to rename your entities as you see fit, move them to other packages or refactor them as any other Roo entity.