The reason that the rankings page doesn't display the clock/blinds, and the reason the tournament page doesn't have any [auto] scrolling items, are the same reason. When an item on the screen, such as the clock, is updated, it causes the rendering engine (Internet Explorer) to reevaluate the entire screen. Even though nothing else gets updated, it still has to determine what else in the layout might be affected by updating the clock. If, for example, one was using a proportional font for the clock, updating it might actually change its overall size, causing some other items to shift around (try this - change the font for the clock to a proportional font and watch as time ticks away and everything on the screen shifts a bit each second). This causes a noticeable pause while the screen renders. Any "smooth" scrolling occurring at the same time would become un-smooth... it would appear to stutter.
Therefore, the rankings and seating chart pages are complete separate from the tournament page(s). This is only one of several reasons. I added <rankings> and <seatingchart> tokens as a compromise. I know it doesn't give everything you want, but hey, that's why it's a compromise.
A partial workaround: You can create a scrolling component on the tournament page, minus the "auto" scrolling part. For example:
<span style="height: 150px; width: 100%; overflow: auto"><rankings showTimeOut="false" showRoundOut="true" showStillIn="false" showHitman="false" showHits="false" showWinnings="false" showPoints="false" showColumnTitles="false" max="50"></span>
This creates a "span" element that holds the rankings list. The height and width attributes of the span give it a fixed height of 150 pixels, while allowing it to expand horizontally to fill whatever cell contains it. The "overflow: auto" style attribute tells it to add scrollbars if necessary. What you should see is a rankings list with a vertical scrollbar. It will not scroll automatically, but you can use the mouse to scroll it...
Again, not exactly what you want, but a possible workaround.