I'd like to know if anyone is an Fire Emblem fan or is planning to get this game, I've seen the gameplays and it looks quite good.

I think I will, I like Fire Emblem a lot. I got Radiant Dawn for Christmas, and I'm working on beating that right now. The class-changing thing sounds a little weird, though...

The 3rd class change? I've never played FE : RD, but I've seen the playthrough, i think it's the same as 1st to 2nd class

This game sucks. It's not so much a strategy game as it is a "get all of your non important characters killed" game. That's pretty much the only way to get any of the stronger characters rather than the other games that rewarded you for keeping most/all of the characters that join your group. Granted, I believe this is a remake of the first game and if this is true, it makes sense that this system blows hard and was changed in the sequels.

... I haven't played the DS one yet, but it actually requires you to get the weak people killed to get stronger people? That seems very different from how it usually is, where you're supposed to train the weak people instead of relying on the strong people to carry you through (which screws you over later when the strong people are just kind of average against the tougher enemies).

Yes. You have to get certain characters to die at certain times or before certain missions in order to unlock/recruit stronger ones. Also, when I say strong, I mean higher tiered characters.

I know that you must let some characters die, but not all/some, is it true there are many characters(stronger)?