I would be willing to buy such a ship, I guess the price would be about twice the cost of the Zvevda model. Would it be resin or styrene?
Also to cut cost a waterline option and a full hull version could be made available. The Zvevda way of fitting the bottom hull to the rest of the hull is a nightmare to fix. Re-planking with real wood is a way to overcome this problem. A better solution would be to have theoption of two hull or have the full hull scored inside for easy removal.

Hope that the hull will be in one piece or split in the middle which is best for model hulls, also the mast is not essential. Anyone buying such a model is more likely to be able to make one out of wood. All my ship kits have wood masts. Also could make it more affordable by not including a sail. Plastic sails are usually not very good and many modelers use real fabric dyed in tea or coffee. Those items (mast and sail ) could be made available as separate items for those that like to use them.The instruction would have detailed graphic and maybe a few photos of the real ship riggings. A good reference for cogs is the Conway's History of the ship "Cogs, caravels and galleons". It was published by Brassey in the 90's and I am sure that there are more up to date info but it is a good place to start. I have about 40 of your figures, sadly they do not fit the Zvevda cog because of the scale differential.I am aware that some modelers have used it very successfully but I have a mental block when it comes to scale!!! So I will save them and hope to see your project be successful. I have started to save my $$$.