My fiance and I are looking for a new MMORPG game. Suggestions?

I need help… My fiance and I have really been wanting to play a game together on our computers that we BOTH can enjoy. I've tried many games with her so far, but none have quite fit right with both of us at the same time. Can anyone help us out with this?

Our Requirements:

MUST be a F2P MMORPG or MMOG
NO Gender Locked Classes
NO Pay To Win (cash shops are fine though, mostly)
Decent Customization (don't want characters that look the same as others)

Our Preferences:

Fantasy Genre
Open World
Sandbox

Games We've Tried That Failed:

FlyFF
Guild Wars 2
Maplestory
Minecraft
Neverwinter
Perfect World
Rift
Trove
Warframe

A game we both tried back when we first met was RaiderZ, it was nearly PERFECT for us, but sadly it died a while ago and ever since, we've been trying to replace it with something new and better.

RUNESCAPE 100%