Apple can rarely leave well enough alone. A year ago, I thought each of the four tablets in the iPad lineup was differentiated well from the others, and it was fairly easy to see what features you got as things got more expensive. The new 10th-generation iPad throws a wrench in things, though. It’s a complete redesign from last year’s model that cribs heavily from the iPad Air while also bringing a handful of compromises to upsell potential customers on Apple’s more expensive tablets.But the new iPad also contains a few puzzling decisions and a $120 price hike — the base model now costs $449. Muddying the waters further, last year’s iPad remains available at $329. And while I think the improvements Apple made to the 10th-generation iPad are significant, I’m not sure how many people in the market for an inexpensive tablet will find these changes worth their cash.Unlike last year’s iPad, which looked essentially identical to the basic tablet Apple has been selling since
