This is what I think, what do you guys think?

First of all, the Easy to get Eidolons:

-------------------- Aelius : heal and cure status, -30% crit DMG taken,

----------------------------- star buff : Move SPD +5%, EVA+5%

----------------------------- trophy : Aelius Heal +15%, HP +10%

-------------------- Alessa : damage, DoT effect

----------------------------- star buff : +25% ATK SPD, 5% chance to Double Attack

----------------------------- trophy : Alessa have 20% chance to stun target for 4 sec

-------------------- Bahadur : heal, -20% DMG taken

----------------------------- star buff : chance to be CRIT reduced by 25%, 1% Life leech

----------------------------- trophy : Bahadur DMG +15%, DEF +10%

-------------------- Bel-Chandra : +Crit, CRIT DMG +20%, decrease target EVA

----------------------------- star buff : +25% ATK SPD, +5% CRIT

----------------------------- trophy : Bel-Chandera have 30% chance to triple hit

-------------------- Eligos : damage, decrease target DEF, +20% ACC

----------------------------- star buff : +25% ATK SPD, DMG +8%

----------------------------- trophy : Eligo's CRIT +20%, CRIT DMG +50%

-------------------- Gigas: decrease target Move SPD

----------------------------- star buff : +15% dmg against Lightning Target, DEF +5%

----------------------------- trophy : Gigas HP +20%, DMG taken -20%

-------------------- Grimm: decrease target Move SPD

----------------------------- star buff : +15% dmg against Flame Targets, DMG +8%

----------------------------- trophy : Grimm's damage +40%

-------------------- Merrilee: damage, DoT effect, HoT effect

----------------------------- star buff : Move SPD +5%, Heal +5%

----------------------------- trophy : Merrilee Heal +25%

-------------------- Serif: damage

----------------------------- star buff : -50% crit DMG taken, HP +10%

----------------------------- trophy : Serif's attacks have a 30% chance to triple hit

-------------------- Sigrun: decrease Target EVA, DoT effect, Reflect 30% dmg taken and heals

----------------------------- star buff : -50% crit DMG taken, DEF +5%

----------------------------- trophy : Sigrun HP +25%, DEF +10%

-------------------- Tigerus Ceasar: DoT effect, Move SPD +20%

----------------------------- star buff : +15% dmg against Lightning Target, 5% chance to Double Attack

----------------------------- trophy : Tigerus ACC +50%, CRIT +20%

-------------------- Uzuriel: +CRIT, CRIT DMG +20%

----------------------------- star buff : +15% dmg against Storm Target, CRIT DMG +20%

----------------------------- trophy : Uzuriel's attack have 20% chance to decrease target DEF by 5%

-------------------- Yarnaros : +DMG

----------------------------- star buff : +25% ATK SPD, DMG +8%

----------------------------- trophy : Yarnaros' attack have 25% chance to decrease target Heal by 50%

Guardian

-------------------- Sigrun: decrease Target EVA, DoT effect, Reflect 30% dmg taken and heals

----------------------------- star buff : -50% crit DMG taken, DEF +5%

----------------------------- trophy : Sigrun HP +25%, DEF +10%

Duelist

-------------------- Eligos : damage, decrease target DEF, +20% ACC

----------------------------- star buff : +25% ATK SPD, DMG +8%

----------------------------- trophy : Eligo's CRIT +20%, CRIT DMG +50%

Ravager

-------------------- Bahadur : heal, -20% DMG taken

----------------------------- star buff : chance to be CRIT reduced by 25%, 1% Life leech

----------------------------- trophy : Bahadur DMG +15%, DEF +10%

Wizard

-------------------- Bel-Chandra : +Crit, CRIT DMG +20%, decrease target EVA

----------------------------- star buff : +25% ATK SPD, +5% CRIT

----------------------------- trophy : Bel-Chandera have 30% chance to triple hit

Sorcerer

-------------------- Tigerus Ceasar: DoT effect, Move SPD +20%

----------------------------- star buff : +15% dmg against Lightning Target, 5% chance to Double Attack

----------------------------- trophy : Tigerus ACC +50%, CRIT +20%

Bard

-------------------- Merrilee: damage, DoT effect, HoT effect

----------------------------- star buff : Move SPD +5%, Heal +5%

----------------------------- trophy : Merrilee Heal +25%

Grenadier

-------------------- Uzuriel: +CRIT, CRIT DMG +20%

----------------------------- star buff : +15% dmg against Storm Target, CRIT DMG +20%

----------------------------- trophy : Uzuriel's attack have 20% chance to decrease target DEF by 5%

Gunslinger

-------------------- Tigerus Ceasar: DoT effect, Move SPD +20%

----------------------------- star buff : +15% dmg against Lightning Target, 5% chance to Double Attack

----------------------------- trophy : Tigerus ACC +50%, CRIT +20%

Brawler

-------------------- Alessa : damage, DoT effect

----------------------------- star buff : +25% ATK SPD, 5% chance to Double Attack

----------------------------- trophy : Alessa have 20% chance to stun target for 4 sec

Warbow

-------------------- Alessa : damage, DoT effect

----------------------------- star buff : +25% ATK SPD, 5% chance to Double Attack

----------------------------- trophy : Alessa have 20% chance to stun target for 4 sec