Long time Kodi user, since it first came out on the original xbox.
Assuming you are a watch and delete person then for films you really do not need more that a seperate folder than you dump films AND only films into and make sure that the film name is correct AND it includes the accurate year for the film. Vast majority of downloads will already have this in place, I never have to bother to rename or move films about as they just go straight into my download folder that Kodi is looking for my watch and delete films. Older versions of Kodi used to be much more annoying for film scanning requiring proper spacing and so on. However its very very important that only films go into this directory otherwise it will fuck up if you start dumping TV programs into here.
TV is much more complex if Kodi is doing the metadata scanning as it normally relies on the top level folder name, and a proper season and episode numbering scheme. If you watching TV I would just switch to a managed downloader like sonarr, its a PITA to manually manage weekly show downloads anyway and sonarr will sort everything out for you.