Player interaction? Oh yes!
What kinds of player interaction is there in this game?It's a worker placement game, so blockage is the instrument of interference.
Is it only blockage or can you directly effect eachother?
To expand, you can: Block, increase action costs, seize one-off bonuses, remove opportunities and mess with the turn order.
Once you understand the dynamics there is ample opportunity for screwage, added to which there are the personalities, who have their own strengths to add to the mix. Your strategy will have to take account of opponents' abilities, not simply your own.