Why would you ever need to change that in the first place?
Well if you wanted certain trees to be more productive than other trees. Or some trees weaker, you can do it without entering the event menu and scrolling through the 30+ events to find the one you want.
I'd love to put all those events on every wood block of my built tree!
Ha. Yeah. That would be pretty hard. Although I'm pretty sure you could use the leaves and as an input, and have some sort of a counter brick keeping track in the middle. And then you could use relays to send information in (I do not want to be the one renaming every new tree). And, maybe a specially timed relay to cause the collapse. But that specially timed relay might have problems with two people hitting at once. And I can't remember if using relays to send info actually works for people other than the brick owner. idk. It'd all be really complicated.
I really wish someone would just make a few new trees. I did a search and I only found one new tree brick.
http://forum.blockland.us/index.php?topic=198392.0 But it's not all that different from the original. :(