Stellaris 2.4-2.6 version is here.
Stellaris 2.7.* version is here.

This mod is an optional addon to Extra Ship Components 3.0 that merges together vanilla and ESC tech trees and upgrades ships fielded by Fallen Empires and crises with new and improved weaponry:

- Spiritualist FE/AFE now uses psionic weapons and strikecrafts.
- Xenophile FE/AFE now uses crystalline weapons and cybernetic amoeba strikecrafts.
- Machine FE and Gray Tempest now use nanite weapons and strikecrafts.
- Materialist FE/AFE now uses gravitic weapons and strikecrafts.

WARNING: This mod modifies vanilla files and may not be compatible with other mods. List of modifier files:

/common/component_templates/00_strike_craft.txt
/common/component_templates/00_utilities.txt
/common/component_templates/00_utilities_afterburners.txt
/common/component_templates/00_utilities_aux.txt
/common/component_templates/00_utilities_reactors.txt
/common/component_templates/00_utilities_sensors.txt
/common/component_templates/00_utilities_shields.txt
/common/component_templates/00_utilities_thrusters.txt
/common/component_templates/00_weapons_critters_amoeba.txt
/common/component_templates/00_weapons_critters_cloud.txt
/common/component_templates/00_weapons_critters_mining_drones.txt
/common/component_templates/00_weapons_energy.txt
/common/component_templates/00_weapons_extra_large.txt
/common/component_templates/00_weapons_missiles.txt
/common/component_templates/00_weapons_pointdefence.txt
/common/component_templates/00_weapons_projectile.txt

/common/global_ship_designs/ai_ship_designs.txt
/common/global_ship_designs/event_ship_designs_distant_stars.txt
/common/global_ship_designs/extra_dimensional_ship_designs.txt
/common/global_ship_designs/fallen_empire_ship_designs.txt
/common/global_ship_designs/swarm_ship_designs.txt