Getting +2 skills over +3 skill tab only loses a few skills in the end. It might be harder to get an ammy and circlet with +2 PallySkills, but my point is that losing a point in Smite, Prayer or whatever you're using isn't the end of the world. You're obviously more spread out though, I hope you still manage to have some fun with the char.
Here's some other novelty pally builds where you don't need to use a traditional skills if you don't want to:
Charger - The EDamage% on Charge is almost entirely synergy based. Even getting extra levels in Charge won't make much of a difference. Consider using this skill while running Defiance, Prayer, HFreeze, Conviction, or Salvation. Just get yourself a really big weapon and +Dmg sources (charms, etc). Just keep in mind that Chargers aren't the easiest characters to use, adn the ulitmate fail for AoEffect killing.
Convictor - These guys are very similar to Avengers, but they use Zeal with lots of elemental damage from gear (Mav's glove for 250-500, Mav's belt for another 250-500, "Voice of Reason" scepter for lvl 16 Blizzard on strike (sadly no ias on this though
), Dragon hat with Metero or strike/struck, Courpsemourn or Blackhades armor, "Ice" weapon with lvl50 FNova on strike, Elementalist rings/ammy, Tiamat shield, etc. With Conviction, even those unsynergized skills do a bit of damage and stack up a fair bit (particularly meteor). Off-weapon ias can make up for some of the slower stuff usually. I find this build pretty fun, but completely dependent on equipment. They spawn massive numbers of counters though, so aren't good against bosses. They are decent against trash, but mostly just to hold their own. My nifty experiences with them: stacking 6 Blizzards at once on a named critter (died as fast as if I were a cookie-cutter build), stacking dozens of Meteors (merc had that dragon hat too) and launching 2 or 3 meteors at the same time (shame their level isn't very high though).
And you've already played wround with Smiters and know that they can use just about any support aura they want, Fanatacism isn't mandatory.