you could do that?
i mean, i have no idea of mapping, and i don't know how much work these changes would implicate for you...
well, i'll just talk at large...
maybe... triple the length of the "black-line-wall" (which is the longest one in your map). and then, take this new length value for the breadth and for the height.
we'd get an enormous blue cube!
is that complicated to realize?
i just guess that such a huge map would give us much more freedom for filming, as to the black-line-problem (because the ceiling would be very high, in that case), and as to light incidence.