Below is a screenshot from one of my previous broadcast. The addon that I'd like to bring to your attention is "
NameplateCooldowns"
This addon allows you to see every cooldown that the enemy target (and all other targets) have currently used. As you can see, the shaman I am targeting has used Astral shift, wind shear, PVP trinket, Wolfs, and capacitor totem. It also shows the timers for every cooldown, so you know when they are usable again.
This is a very important addon for healers, because you'll be able to anticipate kicks easier, juke kicks easier, predict dispels for CC, so on, and so fourth. You can also chose which abilities you'd like to show above their nameplate: If you only want a PVP trinket and a kick to show, you can filter it to just that.
Another addon that I highly suggest is "
Battlegroundenemies"
This addon displays character frames for all* enemy players (I also have it set to alliance as well. bit OCD) and if you look at the shamans nameplate, you'll see that he is currently silenced for 3 seconds because I just used counter shot.
These are personally, my 2 favorite addons for Battlegrounds & highly suggest you take advantage of them.
But like
@Sanit said, the best thing you can do for yourself is use the wow-raidframes & mouseover macros. If you aren't farmiliar with mouseover macros (or other PVP macros) I made a simple, easy to comprehend guide for just that.
https://xpoff.com/threads/easy-to-comprehend-pvp-macro-guide.81464/