Kent Parker - what's the best he can expect?

Well, it's looked grim since his 2nd defence was rejected in the High Court and the Judge indicated a raised payments of costs to Joe Karam on the basis that Parker hadn't presented a defence, hadn't got over the first hurdle of being able to convince the Court that he had grounds of defence that would warrant a trial. The Judge also directed that submissions be made regarding costs to that point some 6 months ago, raised as a penalty factor that Parker hadn't shown a credible defence for a 2nd time despite advice and some assistance from Karam's counsel in order to quickly finalise what is a fairly clear case against Parker.
So in order, even if Parker were successful finally, in filing a legitimate defence, the preceding procedures would have to be settled before any trial could commence. Looking at that, and reading the Judgement it is unlikely that Parker will make the threshold of proving a defence which might be why he has no lawyer willing to act for him, he possibly has already sought legal aid. But that problem is secondary now, because the costs of his efforts so far have been found against him.
He will not be able to proceed to trial, even by some miracle a defence that hasn't been visible for some years suddenly appears, until he has settled the costs. Why? I think because he is shown as unable to pay the costs to date, Karam will make demand for payment as he is entitled. Parker might then try to seek legal aid, convince the Courts of merits in his case which have been already rejected twice (probably count three as most likely,) of which of course he has no chance. Meanwhile the legal aid authority are not able to give assistance in a defence that has no merit, and in Parker's case, which has already been rejected 2 (3) times. In effect Parker is sunk. I don't think there will ever be a trial, it's all over Rover since the Judgement dated 29th July 2011.