Honestly, if you have the same idea as someone else and you make a thread about it, you will get replies like "Use search next time" but if you bump an old thread it gets locked. How are you supposed to bring attention to a previously discussed idea?
IN
Actually, I would think a good way to do it would be to start a new thread and refer to the original thread with a link.
For example:
Subject: Rivers & Capturable Bridges Redux.
I was perusing the wish list, using the excellent and informative SEARCH function when I came across the idea of Rivers & Capturable Bridges. I think this is a great idea and should be revisited....yada yada yada.... why I like it....etc.
Same topic. Not Punted. Gives people reference to what has been discussed before and allows new discussion.
Easy Peasy.

Wrongway, perhaps you'll tell us WHY it won't work instead of this constant ambiguity. And I serisouly doubt that this thread is going to get the Skuzzy stick.
OK. Drop the river and the bridge. You essentially have a capturable double spawn. What happens when one side captures both spawns? Fight over.
How does the other side get it back?
Are there yet two more spawns into the original spawn, making it a quadruple spawn?
Basically, once the bridge is captured there is no way to recapture it.
You're probably better off now with double spawns where you can camp each other as you spawn in or GV bases within driving distance of each other like on that Tank Island in the middle of the big, wet map.
wrongway