Nice to see your ships become more and more realistic and historical correct.
Can we consider the building of a knock-off version of the Atlantic Galley as nostalgia?
Adding Atlantic mini's to it sounds like a good choice: once you build a vintage/retro model, you should go retro all the way
Does knock-off version mean a cheap copy / remade?
Than your shipmodel must be the Imai 1:72 replica of the Atlantic galley.
Your Imai Roman galley must in fact be a replica of the Aurora original: same shape, same size.
Usually the fun in building a ship (modelkit or scratchbuild) for me is to get as close as possible to historic relevance and correctness. The main question is: What archaeological source is the shipmodel based upon? If this differs from the shipmodel, I try to change and improve the shipmodel.
The exception is with the old vintage toys and models for me.
Because I want to pay some respect to the design and value of this vintage model.
Then my fascination turns towards the question: What sources did the designer of the model back in the 1960's or 1970's use by creating this modelkit?
Especially with those old Atantic toys this is a real interesting journey.
The designer of their Ancient Greek range must have had limited acces to proper historical material, and most of it must have been found in Italy and in Italian publications. Which appear, to my opinion, as being a weird mixture of ancient Roman, Italiot-Greek and Etruscan images.
Like that Atlantic galley. The image that comes most close to the model is this one:
Its supposed to depict a Roman ship but its archaeological source I don't know. Its publicated in 1975 in this Italian book not long before Atlantic developed the shipmodel.
The timber designed captains hut and the poopdecks bulwork can be inspired by a mis-interpretation of another picture in this book:
This is as far as I could trace the origins of this model down.
I wish you good luck with building and developing this retro model and crew