That's what lawyers do all day: sit around and TALK.
Why? Because talk is CHEAP. It's about the only thing lawyers can do.
Lots of lawyers talk of lawsuits but, as you all know, it's one thing to talk the talk and another thing to walk the walk.
For a law firm to actually start a law suit one thing must be true: they must have enormous financial reserves, because this kind of lawsuit is not one that's going to pay a lot. So any costs for it must come out of the lawyers' pockets. They won't be suing directly for actual damages because they can't clearly demonstrate any actual monetary damage suffered by anyone. People having personal plans that are ruined by EE does not come close to amounting to any actual damage.
So if there is any lawsuit, it'll be purely for the purposes of getting the government to change something in its policies. Lawyers know they won't be in this for the money (not directly anyway).
That aside, it's not clear what exactly the merits of any such lawsuit will be. The law is clear and it gives the Minister the authority to order draws at any time, or to issue instructions at any time, without advance notice. This has been the law since 2008. There is no legal obligation to "process" any particular class of applications -- only if the Minister decides to process them.
I find it hard to believe that people who consider themselves skilled enough for immigration are caught up in bulls.hit without understanding basic facts.