Suggestion is to add a virtual waiting list for a tables based on game, number of players and stakes type, such as “NL Hold’em - 6 (players) 100/200 (stakes)”. The table would open when enough players (say 3 or 4) show interested in sitting at the same type of table.
Reasoning behind the above suggestion, is there is often no one sitting at a certain table type. One could open the desired table and sit there, monitoring it, waiting and hoping that others join, but often people won’t join a table with one player. The above, bootstraps a game with no effort.