Cross-Server Inventory
I am confident that you can take items from one server to another. The only restrictions I recall are on specific items (not necessarily legendary items) and abilities that are not supposed to be accessible or usable on certain servers. Whether is is explicitly programmed in or a consequence of the type of world represented by that server is unclear.
The concept of Eternum wouldn't work if you couldn't take things to a different server. Eternum appears designed to explore wherever you want. Preventing carrying over inventory goes against that. People would gravitate to specific servers which appeal most to their tastes, and stay there once they've achieved any decent level of success.
Eva
I would love to see Eva again. But if it happens I don't expect it would be at Aphrodite's. From what she said, that wasn't a regular gig for her, and she didn't know how long she would play that part.
Where I'd really like the meeting to happen is in the non-Eternum world. That's tricky, you have to think of how could it be possible that they recognise each other. But Eternum is huge, from what I've seen it's bigger than outside Eternum, making it even more a coincidence (unless there is a story reason) for them to be in the same location on the same server. What I like about the real world meeting is that it would be nice to see who Eva is outside Eternum, and also it's a good setup for the 'Remember how we met at Aphrodite's? What a fun time that was!' revelation.
Who Made The Servers?
One of the central mysteries of Eternum. It's feasible that Ulysses created everything. But it's been at least hinted that users can create servers. I don't remember specifics, but something was said about it being expensive, requiring specialised hardware, and extensive programming knowledge, so only a select few are in a position to do it. A small server like Dalia's might be easier and cheaper, and more likely to be made by a regular user (one who is financially comfortable, no doubt, but not necessarily wealthy). But why? Didn't she win the server? Why would a user make a server like that, then give it away? But Ulysses making and giving away small private servers as incentives for people to play, that makes sense.