I planned on Burbage in 2011. The planners comments
also include a short history of micro orienteering in Sheffield.
The longer courses had two trips through the boulders plus some pretty long legs. To increase confusion in the boulders I intentionally made the different variants similar to gaffled relay legs. I thought Chapper's courses looked about as good as you could get, although now the forest has been felled I'm quite glad I didn't have to run them ;-)
My philosophy is that when it comes to racing "proper orienteering" is anything that forces you to balance speed with navigation. Sure, a several km leg to a point feature through the mist on a mountain somewhere is also "proper orienteering" in that it is a significant navigational challenge that if you don't train for you're likely to screw up.
I personally struggle with the obsession with long legs and route choice. Much as I enjoy orienteering on open areas, long-o and beer trails, (proper) orienteering racing isn't fell racing.
For me the 2019 WOC long race strayed too far into the (I suspect somewhat random) track vs forest decision to be "proper orienteering" even though there were also large sections of what used to be called "classic" that also had a significant effect on the results.
If a long leg is very easy to execute then really it's just a glorified fell or cross-country race. Same problem in reverse for the control-picking middle distance - every time you are at a control you know where you are. Balancing speed and concentration on a mixture of short and mid-length legs can be much more difficult than flowing through lots of short legs. But by my personal definitions Ecclesall Woods is as proper as Lunsen.
My problem is I struggle to understand the view that orienteering racing should be constrained to certain map scales, certain winning times, certain types of terrain etc. I agree that standardisation is required for international competition but most levels of competition in Britain are more akin to "quaint" than "elite" so maybe we should get over ourselves and just make the most creative use of what we've got - which is what Burbage Boulders and Tim Tett's Fat Cat mind-benders very successfully do.