The Reach Spell feat in PF is different than it is in 3.5. And IMHO, much much more valuable. Keep in mind, there were some neat things you can do with Reach Spell in 3.5, combo-wise. But it's standalone value as a +2 MM feat kinda sucked.
In PF, it looks like this:
Benefit: You can alter a spell with a range of touch, close, or medium to increase its range to a higher range category, using the following order: touch, close, medium, and long.
Level Increase: Special. A reach spell uses up a spell slot one level higher than the spell’s actual level for each increase in range category. For example, a spell with a range of touch increased to long range uses up a spell slot three levels higher.
Spells modified by this feat that require melee touch attacks instead require ranged touch attacks.
Spells that do not have a range of touch, close, or medium do not benefit from this feat.
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Which means that a wizard or sorceror can now finally use all those fantastic touch range attack spells (which tend to be a little mechanically-OP due to their risky drawback of being melee-oriented attacks) at a much more value-oriented +1 to spell level.
Secondly, for campaign or upcoming combat encounters where long distances are an important issue, this feat allows for some potentially useful customization of short range spells. Granted, that means a potentially onerous increase of spell level of up to +3. Ugh. But you know what? There are some fights where delivering a potentially-critical attack spell at up Long Range ... may be worth that +2 or +3.
Keep in mind, the Ultimate Equipment guide has a Metamagic Reach Spell Rod available for those with the cash to buy them. But these rods do not have customizable range incrementation options. But I still think they are worth making kick-ass touch attack spells (there's a bunch of them) into Short Range attack spells at a very reasonable cost.
