Just an example of things you can do with a real Truenamer:
Illumian Truenamer 10
Truespeak: 53 + INT (13 Ranks + 13 Item Familiar + 10 Amulet + 10 Affiliation + 3 Skill Focus + 2 Masterwork Tool + 2 Racial + INT)
Evolving Mind:
1st - Inertia Surge (FoM/Standstill), Knight's Puissance (+2/-2 Attack), Universal Aptitude (+5/-5 Skill Checks).
2nd - Hidden Truth (+10 Knowledge/Bluff), Perceive the Unseen (Blind-Fight/Concealment), Strike of Might (+10/-5 Damage for 1 attack).
3rd - Seek the Sky (Fly/Counter-Fly), Temporal Spiral (Extra Move/Daze for 3 Rounds (Save)), G. Speed of the Zephyr (Haste/Slow), Vision Sharpened (See Invisibility/Invisibility).
4th - Spell Rebirth (Restore/Dispel Magic).
Next:
4th - Confounding Resistance (Evasion+Mettle/-2 to Saves).
Crafted Tool:
1st - Fortify Armor (+20 DC for Full Fortification), Keen Weapon.
Next:
3rd - Rebuild Item.
Perfected Map:
1st - Fog from the Void (DC 30 + 10 DC for Solid Fog + 5 DC for Magical Location).
This guy is just a simple build, but he can do an awful lot of those, and use 2 per round with no chance of failure whatsoever for a bit using Quicken Utterance. Other than the Dazing ability, none of those offer a save, mind. And you have Extend Utterance, so most of those last for a while.
Sure, a Wizard of that level can do more powerful things, sometimes, but his spells can be avoided - these have no Save, no Touch Attack, No SR, nothing!