Addon for displaying specified opening sequence
 

Is there an addon where you can fill in what you'd like it to display and it one-by-one checks off the ability or makes it disappear from a list as you cast it in the first moments of combat?

http://www.wowinterface.com/forums/s...ad.php?t=42367

Addons can't cast spells, it requires secure actions and hardware events (one spell/macro = 1 keypress).
/castsequence is your closest bet.

If you only want a visual representation of what spells to cast, there are lots of "rotation helper" addons out there, like this one:
http://www.wowinterface.com/download...eDontWipe.html

I thought it was pretty clear they just wanted a rotation display :p
They just want things be checked off as they use them on pull to help make sure they do their opening right.

Precisely, yes. Having done some research on this, I'm doubting there is such an addon, and I'm betting it would be a hit if someone made one!

http://www.wowinterface.com/download...eDontWipe.html (may not be 100% up to date for your class/spec)

https://www.curseforge.com/wow/addons/hekili

https://wow.curseforge.com/projects/...otation-helper

https://www.curseforge.com/wow/addons/whatsnext

Yea, I'm not looking for a rotation addon exactly, just something I can throw my first initial abilities into. You know? Like, my opener. Something I can edit on the fly and that goes away after like my first ten attacks.

Something this picky there's not an addon for. You have 2 options for this really; (1) Create your own custom addon or (2) Learn how to code within WeakAuras.

I use WeakAuras, but I don't know how to code persay. I'm hoping someone with LUA knowledge would take interest in this idea as a project. I'd support it monetarily, tbh.