Cheers folks, many thanks for your support.
The AABC scoresheets arrived yesterday, it is a bit confusing and I wonder if all three judges actually sampled the same beer, however the common theme is a diacetyl fault, which is not a brewing fault but a fermentation fault and it was penalised quite badly for that (which in line with the BJCP style guidelines). Nevertheless one comment was, "Well made beer...", another was "Look at ferment to clean up diacetyl and you'll have a real winner." With this I feel it is safe to say that MaxiBIAB has indeed been validated as a legitimate method*, it certainly has to my satisfaction, so as far as I'm concerned it is
mission accomplished!
I'm really not that surprised about the diacetyl considering that it was quite a rushed rebrew and it had a very brief D- rest, however I also suspect that I am not particularly sensitive to it (if at all?), while one of the judges perhaps may have been acutely- so. I guess it means that a thorough D- rest should satisfy all palates.
With the recipe (quite similar to the one
above), I need to establish a cleaner noble hops presence so I'm in the process of sussing a few more varieties out, any tips on that would be very welcome as I'm just not that familiar with many noble hops. 100% floor- malted Bohemian Pilsner with a single decoction seems to deliver more than enough malt presence, particularly if I drop the bitterness back a shade as one judge suggested and maybe even skip the decoction, that would turn it into a very simple beer to make.
* Puts paid to any suggestion that BIAB is no good for lagers too...