The MagSafe connector suffers from the same basic design flaw as every other Apple branded cable, which is the lack of strain relief, which again is Jony Ive's fault: he wants the cables to be as slender and clean as possible, but this comes at the expense of proper engineering. The cables fray, the plastic sheathing breaks open. Never mind the accumulation of magnetized particles on the connector, which I've not had an issue with personally. It goes to show that Jony's design is more important to Apple than anything else, because the environmental impact of all those frayed, wasted cables is enormous. It's a deliberately defective design that needlessly contributes to electronic waste, all to feed Ive's design ego.
This is also why I hate the idea of using adapters: Apple's track record of creating any kind of durable cable is abysmal. Why should I spend $20-$45 on each adapter only to have it break after 6 months of use?
As for USB-C being superior, I don't dispute that. What I dispute is the fact that Apple should include as part of the device any kind of connectivity that is needed to use the device with other Apple-branded products: so if you sell a laptop that only has USB-C ports, you should include at the very minimum a Lightning to USB-C connector somewhere. If a user has an iPhone or iPad, give them a fucking cable that works. Don't screw your most loyal users over. Give them a voucher or something. Let them go to an Apple store where they can take 5 seconds to verify your Apple ID and your device and give me a few cables that work natively. Otherwise, Apple is not sincere about moving the industry toward USB-C adoption.
As for the RAM, I don't need 32 GB personally. But anyone who runs FCP will probably want it, especially now that they've been waiting several years for an updated pro desktop. A lot of Macbook Pro owners are professionals and at the end of the day, I think their main criticism is not going to be about connectors or even the RAM limitation, but the slow and uncertain Mac update cycle. For the most part Mac users have learned to live with it, but I almost guarantee you that these newest laptops have sold out simply because a lot of users just need the update despite the serious flaws. This latest gap in Apple's product line, though, has a lot of professionals wondering if they can migrate their workflow to another system, because in the PC world, there's just so much more choice and products get updated far more frequently.