What would we do in these expansive and complex underground areas?

I hope for the former, but I expect the latter :/

I think that the tombs will be the exact opposite of the cavern we begin in.

I think they pretty much confirmed it actually in an interview which was posted somehwere here.

Don't we all.

Could the tombs be equivalent to the full tomb levels in CD's past three games? Because that wouldn't be too bad at all.

I wouldn't have a problem either but for even saying that it could be like that we are subject to virtual stoning by most TRF members :p ...

I would explore every inch, solve challenges...whatever.

But what kind of stuff can they put in these tombs/ caves?

Hopefully some good platforming with crumbling surfaces and some tricky jumps.

But we obviously won't have traps like TRA and classics.

Nor will we have contrived puzzles. Will we find nonsense contraptions? IDK. :/

Lots of wading, but through what? Linear narrow tunnels leading in one direction?

Indeed

This! I don't care how are they. I just want them to be fully explorable like, do that puzzle to find a key that opens a door which contains another puzzle to actually open the big thing! Lol, am I sounding too cliché? :o

Who cares if it's Cliche when that's fun and what the game is?

If we have to find even one key in this game, I'll crey with happiness. That would be so cool.

edit: We really don't know how the game plays in that respect, or if we do it's just not similar at all too the old fetch-tasks.

I\d love the carrying of heavy blocks to return from TRU though. That stuff is cool, make some good physics puzzles CD.