Anyone and everyone who has been phone hacked, and is able to prove it within the rules of evidence and relevant statutes, deserve their court wins. It doesn't matter whether you like them or not. And to be honest, it doesn't matter whether what was hacked was a conversation about what you are having for dinner or something altogether more serious. Hacking and any privacy violation of this nature is disgusting.
I don't think these cases should be heard in the civil court because of the costs consequences to the claimants. These cases relate to such a unique set of circumstances, at a particular time of unprecedented technological change and ignorance of how those technologies worked amongst the vast majority of people using them. IMO, a special tribunal should have been set up to hear these cases.
Costs follow the cause, so the losers will bear the other side's costs. PH won't recover all of his costs and neither will MGN, because they both won and lost heads of claim. I've seen someone mentioning an offer of settlement that MGN made to PH. That was presumably done under a procedure called Part 36. If PH did not beat the settlement offer in his court awarded damages, he'll need to pay the other side's costs incurred from the date that is 21 days after the settlement offer was made. I don't know when the settlement offer was made, but if it was after the actual trial (which in itself would be odd), then the costs consequences of turning down that offer won't be huge for PH, because the parties' solicitors won't have been running up huge legal bills post trial. Either way, this is PH's crusade, and if it not about the money but the vindication, then he has won whatever the costs (which he can well afford). I feel much sorrier for the two women who lost their cases, who may end up with a significant legal bill.