it would basically be like being on base...or am I missing something? I am probably missing something but that's how I read it 
Exactly. It would be a place you can return to, just like the defender can.
I'm not saying that I totally support this wish, I would have to think another bit about it. But I very much agree with the direction it is taking, making survival for the attacker a prospect instead of an extremely rare, freak accident. This could encourage more people to attack enemy bases, especially it would encourage them to 'risk' their perks more in a Panther, Tiger, King Tiger, which are rarely used in any offensive action these days. Mostly it's free or cheap perk tanks vs highly perked concrete sitters, because the moment you spawn in, your tank is, for all practical purposes,lost.
If you examine the tank battles on the various AH maps, the only battles where the high perked monsters are occasionally meeting each other are places like V135-V136 on Ozkansas, where both sides have a realistic chance to land their tanks.
It would be aimed at
increasing actual combat and especially the willingness to 'risk' something.