More like renders the entire first DS line useless.
The Lite sucks for playing GBA games. Crappy shoulder buttons, which, due to the low number of buttons on the GBA, are ESSENTIAL for just about everything that's not a turn-based RPG. There's no link cable support either, so no FFCC or FSA, and no trading Pogeymans or Shining Soul II! Oh, and the cartridge juts out and makes it look extremely stupid, and a hassle to put it in your pocket sometimes.
More like 3DS+GBA(or SP) is the best combo, mirite?