Responding to OP,

I'm pretty sure not ALL roselets were aggro.

Also, things in Alpha aren't completely mirroring what the final will be. I can't say much else. ><; If you know what I mean.

But I guess I could use 1.0's alpha / beta as an example. Outside Gridania in the alpha / beta, there were like NO mobs. You had to really fight with everyone else to grab a Marmot. Then came the final release, and there were LOADS of them. (still competing to get them though.)