your questions regarding the game rules (improving the interpretation).

Upgrading Faeries will greatly strengthen Conflux on poor templates, where it, by the way, is already strong. But upgrading Psychos won't add imbalancedness.

Don't forget, if you upgrade Faeries, then almost never will the Sprites be built. And upgrading Faeries is very costly in terms of timer, and if you spend it in the first few days, you won't have enough for the second week. And what will you do without Sprites and timer for Conflux in the second [week]?)