Kathy Kane is the Silver Age Batwoman, a love interest of Batman, and a completely different character from the 52 Batwoman Kate Kane. After Kate Kane's introduction, Kathy Kane was known as Kathy Webb-Kane and after Flashpoint, Katrina Netz.
Let's say there was a second Amalgam crossover and another company-wide crossover between Marvel and DC. Which characters from both companies should appear in it and/or should be amalgamated and which Amalgam characters from the 1996/97 crossover should return?