With that in mind, four Hybrid builds suggest themselves to me:

Build #1 - "DD/Healer Hybrid"
Take the first 4 ranks in Healer Stance (10 SP), and 9 ranks in Attacker Stance (45 SP) for 55 SP total.
= Three good Weaponskills, one HoT, one Heal, a Stun, and a DoT.
+10% HP, +5% Acc, +15% Str, +15% Crit Rate, +10% MND, +10% Attack Speed

Build #2 - "Balanced Tank/DD/Healer"
4x Healer (10 SP), 6x Attacker (21 SP), 6x Defender (21 SP) = 52 SP Total
= Four good Weaponskills, one HoT, one Heal. Has a Slow, a DoT, and an +enmity ability.
+20% HP, +10% Acc, +10% Str, +30% Crit Rate, +10% MND

Build #3 - "More Attack, Less Tank"
6x Healer (21 SP), 7x Attacker (28 SP), 3x Defender (6 SP) = 55 SP Total
= Same as #2, but trades the +Slow Weaponskill for a +Stun Weaponskill.

Build #4 - "More Tank, Less Attack"
6x Healer (21 SP), 3x Attacker (6 SP), 7x Defender (28 SP) = 55 SP Total
= Same as #2, but trades the +DoT for a damage reduction ability.