Final answer is
or perhaps I should say
I confess that I only bothered going this far by strict logical inference
before allowing myself to make the obvious assumptions about the structure of the solution, leading to this (where white and yellow should now be treated as equivalent):
whereupon it's clear how to get to the solution at the top.
A new instruction!
And another instruction:
Yet another instruction...
The Next Puzzle
Somehow I don't think this puzzle genre will become popular enough to need a name besides "that one huge mashup". But, since I have the opportunity (and have been prompted to use it a few times, here'...
Needs to be upgraded!
Quick explanation of how to solve (lots of pictures for step by step solutions):
Solution to the nonogram:
Solving the new sudoku:
And from there we can fill in the rest as a normal sudoku:
Reading off the yellow letters gives
The initials are also ...
This took me several hours. I did have other things to do today, but ah well, this was much more fun. Thanks for the wonderful puzzles. :)
And the three puzzles:
*** Detailed Solution ***
Important realisation (which you've probably noticed already, but I put it here because I'm assuming knowledge of it in the answer below):
Now a few steps to make headway on this puzzle.
Look at the first column. It contains $3,3$, and there's a gap of size 4 at the bottom. Assume that gap contains the lower $3$.
So the gap at the bottom of the first ...
Next steps to complete the answer after solving the nonogram
At time of writing, @iBug's answer gets as far as
It is noteworthy that
One additional piece of information is
I had two three basic sequences of steps to take this further.
The first I tried was to
A different path was more useful:
There are two possible mappings
The next ...