Trish Stratus would be a plausible answer to Lita’s WrestleMania open challenge. Their shared history makes the idea interesting, and Trish has already competed in CJ Wrestling.
The name I keep coming back to is Trish. An open challenge rewards the person who can change the atmosphere simply by walking out, and few names fit that description better. Lita has left the door open. Would Trish really let that invitation pass?
Would an established rival want the final word, or could a rising contender try to take it? I would not narrow the field too quickly. Whoever answers has to understand the size of the moment.