Jailbreak said:lol! i was gunna say, when i played FE on the cube it was a huge game that took ages to complete with really big maps, really good fun though
Well, Radiant Dawn for the Wii is an even larger game than Path of Radiance for the Gamecube, so you'd very well might like it. The gameplay and storyline is also deeper and more involving than it's predecessor.
There's been some improvement and additions over customization, battles and whatnot. The graphics are only slightly improved (though the battle animations are definately better) but really, they were good before so that doesn't even matter.
Like I mentioned before, the game is around 35-40 hours long (longer if you take your time, obviously) has additional "secret" characters recruitable and playable events on your second playthough onward, and you can transfer your data from the Gamecube game (normal or hard difficulty only) to buff up the stats of all the returning characters.
All in all, it's an excellent game for what it is, and one of the best "RPGs" available for the Wii right now. Definately worth it if you're a Fire Emblem fan