As promised, I went through the international kits, and these are the problems I've found:
Colevrak: no issues.
North: no issues with the alphas.
South:
R4: 3· has its legends misplaced (but you surely know that).
R3: three keys are missing: 2" 3£ «» .
R3: [{ is missing.
R2: no missing keys; however, Ñ and Ç have different sizes from each other and from the letters in the base alpha kits.
EDIT: I'm stupid.
French:
R4: The ² key has its sign misplaced (contrast it with the ²³ key, which gets it right).
All three: no AltGr keys?
French and Italian keys: the accented letters are shown in uppercase, although the standards put them in lowercase. This, however, can be waved off as a design choice (and, as things go, I like it better this way, although this DOES require using a smaller font size).
HTH!