I have been awaiting the MMO since my arrival, early in 04. That is really the only thing that has kept me around.
So those who claim it will "change gaia," probably haven't been here too long sonce the MMO has been planned from the start of Gaia.
That being said...
As the title suggests. Frankly, it'd be cool if all the monthly collectible weapon items, such as Flame Sword, were usable weapons.
They probably won't be, but it would be cool.
As for the monsters, I am certain those monsters are just for the starting area, they should get better the farther along you go.
I doubt they'll make an entire game where you are only fighting Garlic.