Just found this thread. Pretty good analysis all around. However, I find the flavor a bit odd, when using psi to represent magic.
Psionics are so flexible, you can build almost anything with them. It's almost cheating.
Here's my (somewhat older) take on Nanoha:
[spoiler]Bard 5/Lyric Thaumaturge 5/Sublime Chord 2/Loremaster 8
Bard slots:
3/4/4/3/1
Extra Sor/Wis spell on 1st and 2nd.
Sublime Chord slots:
-/-/-/-/5/4/4/3/3/2
Bonus Spells:0/2/2/1/1/1/1
W/+6:0/3/2/2/2/2/1/1/1/1
Loremaster: 0/1/1
Familiar bonus Slot: 7th
Feats: (two flaws, although...)
1, Melodic Casting, Sacred Vow ,Widen Spell Somatic Weaponry
3 Subdual/Nonlethal Substitution
6 Vow of Nonviolence
9 Item Familiar
10 Item Familiar:Increased Sapience (49k GP)
12 Skill Focus(Knowledge:Arcana), get a permanent +4 Int booster item.
14 Item Familiar:Spell Use OR At Will Detect Magic
15 Sculpt Spell
17 Loremaster Secret bonus feat: ( Arcane Thesis Sonic Rumble, Heighten, Sudden Maximize? )
18 Versatile Spellcaster, Item Familiar:Cantrips/Orisons
Spell Choices:
Bard:
6/4+1/4+1/4/2
0: Dancing Lights, Detect Magic, Light, Mending, Message, Read Magic
1: Expeditious Retreat, Feather Fall, Improvisation, Beastland Ferocity, Guided Shot or Nerveskitter
2: Locate Object, Sonorous Hum, Know Vulnerabilities, _, Heroics
3: Haste, Know Opponent, Speechlink, _
4: Voice of the Dragon, Freedom of Movement
SC:
-/-/-/-/4/4/4/4/3/2
4: Resilient Sphere->Assay SR, Ruin Delver's Fortune, Resonating Bolt, Solid Fog
5: Overland Flight, Dimension Jumper, Sonic Rumble, Prying Eyes
6: Shout, Greater, Imbue Familiar, True Seeing, Greater Dispel
7: Spell Matrix, Radiant Assault, Spell Turning, Plane Shift or Teleport, Greater
8: Moment of Prescience, Dimensional Lock, TK Sphere
9: Absorption, ( Time Stop/Foresight/Disjunction/something )
[/spoiler]
(Could also be done with, say, Evoker, but this one can diplomancy during combat).
Basic idea is using Sacred Vow + Vow of Nonviolence + Subdual Substitution + Spell Focus (good) + Somatic Weaponry.
Raising Heart was tricky, especially considering WBL, but something like an Item Familiar Ioun Stone acting as a Rod of Arming, containing a Wand Chamber'd Staff. Combine with Metamagic Spell Trigger, for a decent cartridge system.
Consider the spells Resonating Bolt and Sonic Rumble. One is a 10d4 60ft line, the other is a 10d6 line.
The first deals full damage to objects, and if it destroys the object, continues at full power.
The second, has a duration of Concentration, meaning that with Sonorous Hum, you could have two running consecutively, up to CL rounds. So, at level 10, this deals 100d6 damage, already.
Now, I picked flavor feats instead of picking lots of metamagics, so it's not that optimized for damage.