RE: Dragon Expansion Mechanics
Two options for you to make things simpler:
1) A Dragon token is drawn once per round by a different player. So in a 2 player game, Player 1 draws a token and then takes his turn, player 2 takes his turn, player 1 takes his turn, player 2 draws a token and then takes his turn, and so on.
Therefore, in a 2 player game a token is drawn every 3 turns, 3 player every 4 turns, 4 player every 5 turns, and so on. If you wish to increase how often a scale is placed on a space by using the once per round mechanic, reduce the number of scales needed to crown a Draconic Lord to 2 scales instead of 3.
2) Whenever a player draws one or more Enemies, he must draw a Dragon token before completing his turn (similar to the Event mechanic in Blood Moon).
Again, if you wish to increase how often a scale is placed on a space, just follow the above alternative rule.
Both of these rule variants have been playtested and work very well depending upon how often you wish Dragon tokens to be drawn. The first variant sees Dragon tokens appear more often than the second variant, although if you are playing with 5 or 6 players they are pretty close to each other.
Ps. You could also use the alternative rule which allows a scale to be placed immediately on a space rather than being placed on a Draconic Lord. The colour of the scale indicates which Draconic Lord is crowned as the Dragon King. This variant allows scales to be placed on a space much more quickly than normal, leading to a game with a heavier Dragon influence. Although if you use this variant rule, 5 Dragon Cards need slight adjustment to their text as scales are no longer placed on Draconic Lords!