Based on what we have seen:
1080p and below optimization is a console trademark
Non-SLI configurations are a console trademark
poor optimization on video cards not found in a current-gen console
Poor mouse and keyboard support (not that I care, I use a controller)
We got the big "F U master race" from Bioware this time around.
I don't know about you, but I expect 4K resolution support, 120FPS, and scalable video settings that actually adjust your performance on a newer AAA game.
Crossfire works fine, DA:I is great on AMD hardware at 1440p all on Ultra settings.
All you're experiencing is what I had to endure with games Nvidia had bribed, coerced or cajoled into being their little "exclusives". I can't help but feel a certain amount of schadenfreude.
So to correct your assumptions,
- the game is optimized for 1440p+ resolutions, on AMD hardware, a PC masterrace trademark.
- there's 100% CrossfireX support on AMD hardware, a PC masterrace trademark.
- great optimization on AMD video cards not found in current gen consoles, a PC masterrrace trademark.
- the poor mouse&keyboard support is certainly true, but you use a peasant controller, so you don't care 
The good news is, that sooner or later you'll get the support you're crying for (SLI etc) but this game will always run better on AMD hardware.