Class actions are a specialised area and in the end it's the litigation funders you need to convince.
IMF only funds commercial cases where the claim exceeds $5 million (I'm actually part of their class action against Australian banks).
While it's possible that there are lawyers who'd like to become the go-to people for Bitcoin related stuff, I'm not sure this is a particularly attractive case for them. Class actions are expensive and time consuming and if you want to "make a name" for yourself you need to be able to win large awards which can actually be enforced. A "victory" in this case could well be pyrrhic because it's not clear that TF would have any capacity to pay by the time the case was settled (especially if evidence of criminal wrong-doing emerges).
If you were a lawyer looking to make your name in the Bitcoin world, it would probably be in the area of fighting financial services regulations being applied in ways which send "legitimate" Bitcoin enterprises broke rather than trying to sue for the recovery of funds from shady businesses and individuals who have lost or stolen user funds.
If the only real issue here is price, I'd say all we have to do is wait. The 4100 "hacked" bitcoins are already worth $3.5 million. The price of bitcoin would have to go up about $269 for this stash to be worth more than $5 million. If this were a normal stock, I'd say eh, that'll be a while. But the price of bitcoin has gone up about $170 or so just in the last couple days.
But I think you've got a good point with the rest of what you're saying. That said, I don't really expect the attorneys to do this case for free. I remember dwdoc said they do this for 25% - 45%. I wish that could be clarified a bit, 45% is a rather large chunk out of the stash, but I'd personally happily fork over 25% to the attorneys to be able to have the other 75% back.
Don't get me wrong, I'd much prefer the full 100% back. But these days, it's looking like a choice between 55% or 75%. The 45% cut really seems way too high to me, but I think 25% is fairly reasonable. They'd be making plenty of money here, since that's $1.25 million at ten minutes ago's prices ($971).
This all assumes I can fund my share of the case out of the bitcoins that would be recovered. If I have to fund them out of pocket, I don't really think it'd be worth the hassle, at least for me. Might be for others who have more money in Coinlenders, however.