Everything rank X.. now what?

Unlock Ultra Rares.. buying Premium Packs only, unless I need supplies, then I'll spam the 2k packs until I have 5 of everything before each match.

..and MAYBE.. Single Player.

Save up credits because you know they will be releasing more kits / weapons in future DLC.

And some of those are probably going to be more powerful than anything we currently have

It's better to buy Premium packs at that stage, since it's just URs that are left that will be grindy to get. (Rares will come on it's own)

I'm nowhere near maxing my rares but I'm in no hurry either. I'm doing challenges (weapons,powers etc) as I progress with my manifest and levelling characters.

Not in the mood for farming tbh. Just play the game and have fun (as much as you can have in this game )

Nearly done maxing my commons,
but I did put 90 hours into a single-player run.

I've maxed everything except ultra-rares and the (extremely) uncommon weapon mods. But I've only got a few characters to level 20 and have only used half a dozen guns extensively because I'm really struggling to find setups that I enjoy.
So hopefully Bioware will fix combo detonations, buff a lot of powers and improve nearly all the weapons - by that point I'll probably be saving credits for any new DLC.

Also, lillekri, I think we just played a couple of matches together, good games.

Like others, saving credits and buying the 2k packs if I need Ed consumables, still need a few n7 kits

I don't really know what I'm doing in the game right now. I maxed out my rares a while ago and since then, I've been very slowly levelling up a few characters and using different weapons. I'll still do the occasional farming on zero outlaws every now and then. I don't know whether to keep farming and grinding for credits, or whether I should stop spending my credits and focus instead on levelling up characters. Every single time I pick a character to level up, I end up getting bored and not having any fun at all because of how bad the game is. Just gonna wait for the reegar carbine and see how that turns out. I'm not even looking forward to maxing out any of the ultra rares because they suck so bad.

Just use the Sweeper, the devs say it's really good... after testing the multiplayer on bronze 

Melee damage mods? You don't need those Drop those boosts like a bad crutch

I've been wondering the same.  It honestly feels like the copied the text from the packs in ME3MP, but there's a massive difference between the costs.  3's Spectre Pack was 60K, while the double rare packs were all 99K.  So it was 25 percent cheaper per rare and chance at Ultra Rare, which over the long haul, was indeed a higher chance per credits spent.  Since Premium packs are exactly double Expert packs in MEAMP, there's absolutely no credit difference at all. 

I've been saving up around 250K at a shot, and buying 1 Premium, 2 Expert and 2 Uncommon at a shot to just work on getting stuff from all three tiers.  I may drop the Premium though and just go with Experts to get more consumables.