One can't avoid teaching the WW2 syllabus
That's not strictly true. Every school has the opportunity to submit its own training syllabus to the authorities for approval. Problem is that nobody ever attempts to do so - they just use the old (WW2?) syllabus that was written by AOPA.
Provided it complies with the licensing minima listed in JAR-FCL then give it a go.
There's a challenge for you 540 - write an Iraq war syllabus instead of WW2. Prove the industry wrong with your laser guided GPS modern methods.