If the notion that "you should be able to roll up on a base and bang away all day undetected" bothers you, does a set of 30k Ki-67's deacking your field to set up the vulch bother you? Do NOE raids that take out guns first and then vulch the runway bother you?
No, because those mimick real life just like GV warning bars do.
Making an argument that the game needs more action, then complaining when that action it's literally sitting there on your runway shooting at you while your base flashes, is facile.
What’s facile is your entire premise—namely that nobody would ever notice or be informed of the presence of a GV on the field except by looking for it in the tower or being blasted by it as you spawn.
I don’t find GVs as action in any form. They’re a walking talking double-standard one-way street of gaminess. I love dropping 1K-pound bombs on them and that’s about all the use for them I have. Glad they help fund the game at least.
Your definition of “action” is griefing spawning or landing airplanes. Real sporting. At least with a vulched field I know to up or land elsewhere.