I know where you're getting at, but like I said the price section isn't what I was trying to get at.
You've actually put the cart before the horse. Apple has clearly shown that price strategy comes first when figuring out model differentiation.
Take a look at any of their product lines, and you'll see they almost always have four different models with fairly uniform spacing of the price between each. They then have a similar type of overlap between product lines -- MacBook Air => MacBook Pro => iMac => Mac Pro.
The net result is that it's easy for a customer to mentally slot into a broad category of desired product, easy to figure out which model fits the budget, and then -- and this is key -- the price points are closely spaced enough for the customer to reasonably imagine stretching a bit and buying the next model up.
That is, if you want to have a laptop and your budget is $1,000, the MacBook Air is right there for you. But just $100 more gets you twice the flash ("disk") storage, an easy upsell. Or $1,200 gets you the entry-level MacBook Pro, with much more impressive specs and not all that much more heft.
Viewed from that perspective, Canon's got it pretty close to right. The Rebel line needs some cleanup; they should ditch the T3 and drop the price of the T2i and do a bit of rounding; I'd put it at T2i @ $600 => T3i @ $700 => T4i @ $1000. When the T5i comes out, price it at $1,100 and drop the prices of the others by $100, retire the T2i, and continue that pattern. I'd drop the 60D, call the rumored 70D an 8D instead and price it at $1200. The 7DII keeps the 7D price at $1600 (and the 7D goes away), then the 6D @ $2100, drop the 5DII when stock runs out, and the pro-level stuff they can price however they want. You're then left with three Rebels and three xD models for the masses, with gradual price jumps along the way. Funky branding and pricing is probably a bit of a plus for the top end, which is why the huge leaps and lack of naming consistency isn't a problem for the 5DIII and 1Dx and anything else (like the super megapickle studio camera) that might come along.
In tabular form:
T2i : $600
T3i : $700
T4i : $1000
8D : $1200
7D : $1600
6D : $2100
(pro stuff however it falls out)
I guess I see what you're saying, but still I'm not here for the pricing. If you feel like that's more important than ok...but what I'm trying to get at is the product line. And just because there's only 4 product lines doesn't mean they can't sell the last generations product line to fall in between the price gaps, but again pricing isn't my main subject.
You still need the "cart" even with a "horse"......