Having watched this project since 2000, I must point out that it is far better than what the voters approved years ago, and I vehemently fought against.  Check the history, and thank God for intervention.  No other explaination fits.

The marsh will remain a marsh, the pond a pond, and the cost/benefit for the town appears positive.
No parkway; construction impacts, trash, spills, salt, etc.  No golf course pulling water out of the pond and sending the questionable runoff down stream.  No structures, golf cart roads and bridges, pipes and cables and other crap in the wetlands "buffer". 

Just the construction of the original project would have likely scared every critter away, for years, if not ever.  I think it is a migration stop for a few, who may only have a few left.
 
I could be wrong, but they could be doing far worse things with that land, legally, without the consent of the town.  They OWN it!  They could mine it to the water table and leave a nice mess.  Far worse could be happening.

PS. Exit 10 NEW tax revenue exeeded bond payments again. Well over 300k in the kitty. 

Not a lot, but not a drain.  It will get better once the bond is paid off, and others finish their projects there.