Heehee, I agree. Now watch a series of fairly reasonable bonuses turn into a nightmare!
Half-elf, rolls 18 Charisma and 14 Intelligence. That's +6 to Diplomacy from race and stats. Starts off as Psion: Telepath with 4 ranks each in Diplomacy, Bluff, Sense Motive, and Knowledge (Nobility and Royalty) taking a Friendly Psicrystal (+3 typeless to Diplomacy). Takes a level in Warlock, selecting the Beguiling Influence invocation (+6 typeless bonus to Diplomacy, Bluff, and Intimidate) as her only invocation and ramping up Bluff and Sense Motive with 1 ranks each and Diplomacy by 1 (paying 2 points for the Diplomacy crossclass). Next level she goes Wizard: Enchanter, taking 1 rank in Knowledge (Nobility and Royalty), the final rank in Diplomacy (paying 2 points again), and selecting a Mink Familiar (+3 typeless to Diplomacy, and I made this one up). And feats? Skill Focus and Negotiator of course!
Now she has:
+4 Charisma, +2 racial half-elf, +6 Typeless Beguiling Influence, +3 Typeless Friendly Psicrystal, +3 Typeless Mink Familiar, +3 Typeless Skill Focus, +2 Typeless Negotiator, +6 from ranks +6 synergy from the 3 synergy skills = +35
Enjoy