When it comes to keeping stock of the different models, yes. But when it comes to the consumer having to make decisions, colour and cellular flavour (which is only an issue in a few countries) are almost completely orthogonal decisions. They don't affect price nor functionality (only indirectly via network coverage). Meaning they can be made completely independently of choosing the size, generation, capacity and presence of cellular modem.
And since the main complaint in this sub-thread is about giving the consumers too much choice, a too confusing line-up, I think it is hard to argue that adding colour options really made things harder for consumers. And besides colour options, the number of choices as enumerated by me have not really increased over the last couple of years and is not expected to increase.
While it may look rather simple to the consumer at first glance, the details are the problem here. As you confirmed, keepign stock is one of them. If the customer walks into a brick-and-mortar store these days, he expects to be able to get the product he wants or "needs". Even while ignoring that the current options could already become confusing to the customer (in a sense that the decision is more difficult the more options are available, pardon me if "confusing" is the wrong term - no native speaker here), if you don't get what you want and have to change your decision on the fly or go home without the a product, because the store does not have your desired option, is a less-than-satisfying user experience.
Someone compared the easiness with ordering a burger at a fast food chain. That comparison is flawed imo, because usually you can get whatever product out of the chain's portfolio you desire - any day, any time.
And then there's the other side of the medal, which seems to be ignored by most posters: The seller / maker side. While it may be true that there is only one LTE model for a certain country, Apple (and its logistics partners) have to deal with a couple of those, because they have to cater to many markets world wide. The more factors you have to consider as company, the more difficult it becomes. Eventually you'll face delays in some products, so you have to explain to the customer why a product is available in country A, but not in country B just around the corner. You have to evaluate and certify components, test and qc them as well as the finished products, ensure in-portfolio compatibility, adjust the software (e.g. hardware drivers), keep it in sync over all product variations and much, much more.
That will inevitably lead to a negative impact for the customer, even if he may not be affected directly, because for his untrained eye there are only so few products. Then why can't Apple bring them to market already, in sufficient numbers and also assure proper QC, while they're at it?
a mini Pro would combine the best size for an e-reader iPad
Even as an owner of iPad and iPhone with e-reader apps on them, for reading I prefer my ePaper eReader all of the time. Perhaps if an iPad could offer a similar reading experience (like e.g. a display with additional ePaper mode, perhaps even transflective), then I might reconsider.
I dunno. How can Apple charge more for a smaller iPad Pro just because it doesn't have bezels? Doesn't make sense to me.
Smaller = newer, more sophisticated technology = more expensive. Assuming that the tech specs (like battery time etc.) are comparable.