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'Fed up with Napoleonics', what a strange concept!
Speaking personally, I can always find room for sets that are as beautifully sculpted as yours. For me I'll get the coming late Russians and Austrians in greatcoats in larger numbers as they are not armies/styles that I have built up previously (as I have, for example, with the lovely Redbox early Russians).
As has been noted in previous posts, early Russians in greatcoats and even earlier Russians in hats remain a gap (the old Esci set of 'Prussians' was the only one). Similarly, Austrians in kasket have only been done in a part-set and they are 'giants'.
Still with infantry, few of the French-allies who contributed smaller forces have been produced specifically (e.g Dutch with plume at the side). Then you get into artillery and cavalry...
Napoleonics remain a wonderful, bottomless pit of 1/72nd joy!!