I'm not sure if I can really help you with that but here are my 2 cents.
I think computers in Traveller have always been somewhat awkward. People of the late 70s had no real idea how computer would develop in the coming years. I think Mongoose Publishing already took a big step in the right direction but a certain awkwardness seems to remain in the representation. It is always a struggle to find a balance between realism/simulation and playability.
We have now a better understanding of how computers can be used, so we can start from there, which means TL-7/8. And we can see certain developments at the horizon, e.g. quantum computer, optical computer, brain interface, holographic displays/interfaces etc.
You can make the use of computers as simple or as complex as you want. We have the rules, that we can use as written. Everything else is up to the referee, such as standard software of today, spreadsheets, text processing, 3D-construction, games, etc.
Want to introduce more complexity in regards to computer? Compatibility, both in software and hardware, is such a big topic nowadays. We have new standards every year or so, which makes it harder and harder to access older tech with new computers. Only through adapters, emulators and such is it possible. You can make computers of different TL incompatible to each other for a start. Make the players create their own adapters or software to interface with an older model.