How about: (The Legend of Zelda:) Spirit Myths <working title>. And just choose your title when the game is at 99%. You can then base it on either an item that plays a central role in your game (see OOT, PH, ST, MC, FS(A), WG), a character that has a big part in the goal of the main story (OOA, OOS, MM, LoZ) or based on a larger overshadowing theme or gameplay (AoL, WW, ALttP).