Hmm, looks like I stirred up a hornet's nest. Oh well, sometimes it can be beneficial.
Events like limbus, dynamis, multi-mob BCNM's, Nyzul, etc involve constant mob re-positions, new mob acquisitions.
All jobs must move into positions for new mobs as they come in. RNG gets the benefit of firing on the way in. And on these types of events, RNGs running to a sweet spot is often a waste, when you kill individual mobs so fast, that three shots is a rarity. Make sure you use your assist macros, this helps take some of the work out of it. For those who may not know:
This will allow you to autotarget the mob that your tank called and is engaged on. Personally I don't like the auto attack line, in case the tank voked, flashed or whatever a different mob than they called. But it can still work fine if you're careful. And also be sure you have "/autoattack off".
I'm looking at the chat log, status efect bar and health bars fairly frequently as well as checking where the mob is and what health they are at.
This could be a problem, depending on what you filter. Whenever I'm on a DD at an event, the only things I have show up in my log are "Attacks by you, Missed attacks by you, Attacks you evade, Damage you take, Special actions started on/by you, and Special action effects on/by you". I don't need to see, as a RNG, other ppls damage, when the PLD casts flash, the NIN casts Utsu, etc. Mob position is obvious, and exact mob health is of little concern. You only need one person to call out the % health on mobs, and this almost exclusively is on big prey. Not rank and file mobs in events.
By making sure you have enough things filtered, you don't need to watch your status bar, you'll see when you get blinded, paralyzed, etc. And if your mages are worth a damn, they'll have their filters set as well. It was a mark of pride for me as WHM, to be able to status cure before the annoying tank or DD would cry out "Silena plz". But then, my WHM grew up in LoO. And if you're crying for a blindna because a mob has that potent of a blind effect, then bring some damn Eyedrops for those emergencies. Saves your mages ~16 mp, and a LOT of time (blindna is relatively slow to cast).
In short, Rapid Shot should not be as debilitating as you make it out to be.