Oh, for sure. I'll admit that I'm a huge dungeon crawl fan. I do. I loves me the hack. And, adding verticality to a dungeon crawl is one of the best ways to really add tactical depth (ahem) to the scenario. Start putting room exits fifteen feet off the floor, pools, stair ways, all sorts of goodies. At the moment we have a plugin for Fantasy Grounds that will track altitude and calculate range automatically, which is nice, but, it doesn't handle LOS, so, you can't see "over" an obstacle. It's not bad, and it gets the job done, but, I'd LOVE to have an actual 3d battlemap for a lot of my encounters.
One feature I do hope they include is a way to set your camera in the head of the token so you can see the scene from the token's perspective. Not necessarily play that way all the time, fair enough, but, just an option to be used. Plus, one would hope that in a VTT built from the ground up with LOS, walls would actually block sight. As it is now, you have to draw the LOS lines overtop of the map, but, if you draw the LOS lines exactly over the edge of the wall, you can't actually see the wall anymore. But, if you set the LOS lines inside the wall so you can see the wall, then you wind up seeing around corners which the character probably shouldn't be able to do.