With Patlabor I imagine AL will just use the Sentai masters rather than go to the expense of re-authoring the discs to include the Manga UK dub. Discotek have managed to obtain the rights to use many Manga UK dubs so it's likely possible on that side of things, but it'll be an added expense. I live in hope though because those dubs are the best Manga UK ever did, and an example of what they could do if they had a modicum of respect for the source material.
Those dubs might be all that can get me to buy the films again (VHS, DVD x2, Blu-ray at this point) because whatever physical extras AL muster up they won't be able to top the amazing books in the shiny DVD breezeblocks.