Regrowing Trees

I'm trying to get trees to grow back on my footwars map. I've gotten it to work by doing a pick each destructible in region, and resurrecting it if it is a ruined tree wall.

There's two problems with this:

1. The trees instantly pop back into existence. I've seen maps where they sprout out of the ground (Waugriff's FFA footwars, for example). Doing the regrowth animation in a nice lag-free way is another worry.

2. It seems like doing a Pick Every Destructible... is going to be slow and cause lag in a multiplayer game. One solution i have come up with is to amortize the cost by doing continual tree refreshes of only a couple of trees at a time. I might pick 10 destructibles on the map every ten seconds, and for every one that is a ruined tree wall, i will regrow it.

1) Some types of trees have regrow animations, others don't. Not much you can do other than use the ones that have animations. For example, Barrens Canopy Trees have a grow animation, Barrens normal trees don't.

2) It wont cause lag.

3) "pick every x in y and do z" causes memory leaks. remember that.

The Sunken Ruins treewall tree does have a birth animation, but I can't get it to play! Does anyone know about this?

AnArki, pick every unit in region can cause a memory leak, pick every descrutable in region doesn't. If you want proof go look in blizzard.j (it is to do with the lack of a "Descrutable Group" object)

edit: You can manually play the birth animation with the action
Animation - Play Descructable Animation