He probably will not have such an awesomely 1990 costume and hairdo (what would be the 2014 equivalent – lumbersexual?) but we’ll get to see what his Jedi Master physique looks like today. Per Hitfix:
“Mark Hamill returns in a brand new interpretation of James Jesse (aka The Trickster), a role he originated on the 90’s ‘Flash’ series. In this new iteration, The Trickster is an anarchist terrorist con man serving a life sentence in Iron Heights who helps Barry (Grant Gustin) and Det. West (Jesse L. Martin) to foil the city-wide attacks of a wannabe Trickster eagerly following in the original’s deadly footsteps. The episode will reunite him with John Wesley Shipp who went up against him as the original ‘Flash’ on the CBS version.”
So the new Trickster will presumably be Axel Walker, then? This kind of makes me wish John Wesley Shipp had been cast as Jay Garrick rather than Barry’s dad. Hamill’s “Trickster” performance more or less became his Joker performance a couple of years later, so it’ll be fun to see how much of that remains.