When both factions receive a Spynet token during the Strategy phase, at what point (if ever) do players reveal which fleet it was assigned to? I'm imagining a lot of gamesmanship over it which could be interesting.
If it's public, then which faction assigns first? By assigning second, you can give your Spynet token to a fleet that is matched against an enemy fleet with a Spynet token. That guarantees either a) you can have the last move in a spy vs spy maneuver as second player, or b) you can prevent any spy effects from occuring by choosing not to spend your Spynet token during the battle (since first player must use all Spynet tokens before second player).
If it's secret, that fits well thematically and adds tension not knowing if your fleet has been compromised by spies, resulting in careful positioning. And of course if/when the reposition comes it is a bigger reveal.
Thoughts on how this should be played?