during the previous events, when sansha forces turned up and started "deploying dropships", there were several people in frigates or even rookieships, that were "deploying countermeasures", including "marines" and other such things.
Sometimes CCP acknowledged it, sometimes they did not. It depended on who was the event actor, I suppose.
same with every other non-mechanical action. It was entirely up to the event actor in control of the event whether the actions were successful or not. E.g. some people used gravimetric ecm on the wormhole. That worked once or twice, did not on other occasions. On yet other occasions, the event actor said something along lines of "deploying wormhole stabiliser", which showed they acknowledged the ecm was happening, but it would not affect the course of the event.
There were also mechanical actions, including setting up PI structures, representing ground bases for defence forces. This was also acknowledged at times, successful or not.
There was also a situation whereby the Sansha command ship would hang around long enough to be destroyed, even if the players weren't managing to achieve much against it.
that is:
20:00:00 Slave Actor > 30 minutes until operation complete.
20:45:00 Slave Actor > 15 minutes until operation complete.
21:15:00 Slave Actor > 5 minutes until escape wormhole opening.
21:45:00 Slave Actor > Escape wormhole collapsing. There is no death in Nation. *explodes*
Ultimately, control of the event is almost entirely in CCP's hands. Unless players bring overwhelming force and wipe the field of actors (and sometimes not even then), then the actors will decide what happens:
Actor> deploying ground force Alpha.
Actor2> go team!
Player 1> I'm dropshipping in marines to fight Alpha
Player 2> deploying air assets to support Alpha
Player 1> Additional AAA units deployed
Player 2> anti-aaa missiles launched
Player 1> missile shield activated
Player 2> activate shield penetrating lasers
Player 1> deploy smoke and mirrors to defeat lasers
Actor> Alpha force commander report
Actor2> I don't know what the hell's going on outside, but we've got what we need. shipping out!
or
Actor2> there's too many of them! aaaaaaaaarrrgggh-
In either case, actor2 decides what the result was. The piling on of measures and countermeasures just gets a bit... weird.
Given that experience, then I'd suggest:
1. Let CCP play the npcs. The event will pan out according to CCP's plan anyway, rping things that cannot be represented by game mechanics that don't get acknowledged will only lead to frustration.
2. If there's something that can be represented by game mechanics, e.g. having your cargohold full of marines, then do so. Recognise that this may not have any effect.
3. Your side will lose sometimes, win other times. Accept this and avoid being frustrated at the apparent incompetence of the event forces.