to get more value out of the Legends Showcase i would recommend learning how to hex edit on the xbox 360. there are threads in the roster section that talk about and explain how to do this.
http://www.operationsports.com/forum...ex-editor.html
http://www.operationsports.com/forum...ex-editor.html
hokupguy also has blogs in his arena that provide codes for arenas, jerseys, team IDs as well as colors used in hex.
from the DLC you're able to replace any nba team arena with Times Square Court. you can then use this court to play full games with the same presentation options of the regular game (commentary, stat overlays, etc). the cell shading is toned down greatly, but it is still there. off topic: you can also use the Rucker Park day and night (street) court, summer league court, combine arena, and practice courts as well. with the same presentation as above.
you can also hex edit in the jerseys from the DLC. using the regular hex editing tool you can replace any jersey you want. the list of DLC jerseys is provided in the link below.
http://www.operationsports.com/hokup...dlc-uni-codes/
there is also a list of the hidden jerseys in the game that you can use.
http://www.operationsports.com/hokup...uniforms-list/
hex editing can seem overwhelming at first but if you follow the tutorials it can be done by anyone. changing arenas (courts) and jersey codes may be the easiest thing to do in hex.