Yesterday a random event give me a simple idea.

We were playing on volcano (open space & no AGT/obelisk). The game was very offensive and many buildings were down on each side. At the end the GDI had the refinery left and Nod the airstrip (strong advantage for them). I took a shotgunner+ion beacon, infiltrate the Nod base, and placed the ion (+C4 on it)outside the airtstrip building...

5 engys jumped on me. I only killed one them before exploding under their C4... Later one of them died with my C4 but with 3 engys left, i believed that my beacon had no chance to survive. And a nuclear strike was called....

Suddenly I see the GDI victory screen !!! And the scores show me that the ion beacon was successful ! How can it be possible with 3 engys left near ???

I got the answer in the next game, when "Mr.Mendoza" (thx u guy !!!) told me as a sniper, he had killed all the engy left...

So this was a start for building a little little strat :
- with teamwork : try to place the beacon in line of sight of a teammate sniper.
- with no teamwork (harder need a lot of luck ) : take a sniper and try to defend your beacon by yourself ! (on some tricky map this is possible)

Yes this is not the greatest idea, but i think it could help sometimes...