In the log Bipolar XOR gate with only 2 transistors we see the legendary interlocked transistor gate :
Then this HAD post describes a very clever driving scheme :
Then it became clear... Under the right driving situation, a transistor (with its base resistor) is a ANDN gate !
Why does it matter ? Because this could greatly help to implement circuits such as this 7-segments decoder:
This is a sort of "slow" circuit where parts count matters more than speed (hard saturation is not an issue) so hacks like this will help a lot :-)
For the above "arbitrary logic" array, wired-oring will also save parts. All we have to do is "solve/reduce with ANDN". Who wants to play that game with me ? :-D