I host games for multiple friends who join long-distance. Sometimes we need to move to multiple tables, and because I keep overall standings, it is easier for me to remain the host for all games in our group. I would gladly pay for additional full expansion accounts, I just need the ability to create a new table and spectate rather than playing.
Aside from this, dominion online is the best thing that has ever happened to the internet, and probably humanity, and possibly the whole world.
So perhaps I should amend this request to say that what would be best is an actual option to "host a tournament." It would be great (and save me time) if tournament tables could be randomly generated to host a large number of participants. If this is too complicated, then see above.