Oh, I've never seen seamless X-Windows tiling ... if you open a new terminal, does it seamlessly tie in with other windows.
Do you get a menu bar when the mouse is over any of these terminals?
Completely depends on how you choose to set it up.
There are four layouts you can choose from, and can assign a different one to each tag (similar to a virtual desktop).
With tiled layout, windows are managed in a master and a stacking area. The master area contains the windows which currently need most attention, whereas the stacking area contains all other windows. The master area can be splited in several rows and column, as you want.
Each window is resized to take full screen space.
All windows are stacked behind the focused window. This one is centered in your screen and takes most of the available space.
In floating layout, windows can be resized and moved freely, just like a usual window manager. Dialog windows are always managed floating, regardless of the layout selected.
Currently I run most of my tags in tiled mode, with half my screen dedicated to my focus and my other windows stacked on the other side. So when I open a new programme or terminal, it is titled into the stack. But even in that view, you can manipulate it and stack however you please. I also tend to have one tag in float mode too, that I just use to quickly open a programme that I will need for a short period of time.
You can set up how you want title bars to work, either displayed at the top, bottom, left or right, and if you want them always there or only when the terminal is in use.