Hello and welcome to our forums!
As you probably have noticed already, the Tandy CoCo dats in TOSEC are quite old and currently not maintained by anybody.
Therefore, a similar neglect like MAME's affects them and their condition reflects at best what was known when they were created and the ability and knowledge of the relevant datters (which in many cases is limited to seeing the emulated software running). As with most relatively niche systems, they are bound to contain many errors since even the datters that created them were most likely not system specialists.
I've noticed there are disks for a number of programs that were only released on cartridge or cassette tape (meaning these were manually converted by users or using special programs to automate the task) making them not exactly 'accurate dumps'-- an example would be Zaxxon, which was only released on tape. What's the official stance with these?
TOSEC's project goal is not to have only accurate dumps. TOSEC is trying to fingerprint/document all dumps found in the wild, including even bad dumps. So we will include stuff like these floppies, even if no original floppy exists. But of course they should be marked in the dats accordingly.
I think the closest defined in TNC is the [f] flag:
Fixed - [f]
The original software has been deliberately hacked/altered in some way to 'improve' or fix the image to work in a non-standard waySo I would probably name them something like Game (19xx)(Company)[f floppy conversion] / [f tape to floppy transfer] or something along these lines. Admittedly I haven't given much thought to what would be good to be shown after the [f], but it should be something conveying the needed info in a relatively standard way for all affected images.
With all these in mind, if you are serious about working with these dats, you are welcome to join the team and be assigned to work on them.
If that is too much for your tastes, submitting fixes is also fine and I will try to include them, but TBH I don't have any personal interest in the CoCo.
At the moment we are short on hands, so any help is hugely appreciated.
Also hoping to work with you in the future!