The lineup is a little bit odd because of this, and I bring up the Zephyrus as something of a demonstration of the idea. When you by a MacBook Pro 14" M5, you buy an integrated graphics-class system and essentially you're getting a laptop that's the exact same size as a laptop you can get packed with a 100 watt RTX 5070Ti. Your CPU doesn't even really need a cooling fan and yet the computer it's inside of is the same size as a gaming machine with a dedicated GPU.
Obviously I don't mean to say that Apple should make a laptop that sacrifices fan noise to that degree, but the same idea is happening in their lineup:
You buy a M5 MacBook Pro, you're getting a laptop thick and heavy enough to thermally support a much higher tier system that isn't even on the same planet in terms of performance (an M5 Pro or Max system).
Here's how I would change the lineup:
MacBook Neo is your entry level, stays the same.
MacBook Air 13" and 15" handle your everyday computing very well, they stay the same.
MacBook Pro 14" and 16" with the M5 chip gets a thinner and lighter chassis, closer in size/weight to the MacBook Air. These systems are there to give you the extra I/O and better quality screen/other additional "pro" features that you get with the Pro lineup but for someone who is only doing medium-intensity tasks.
MacBook Pro 14" and 16" with Pro/Max chips remain roughly the same.
Bonus points: Apple could also more enthusiastically enter the PC gaming market (>900 million customers) if they put out something like the MacBook Neo but instead of targeting Chromebooks they would target low to mid range gaming laptops like Lenovo LOQ. Do a lot of the same cost-cutting as the MacBook Neo: no haptic trackpad (gamers don't need it), worse speakers, lower resolution screen (good for games), take the Steam Deck route of using an SD card for expandable storage and keep profit margins by continuing to solder the internal storage in and limit the size to ensure pros only buy the more expensive MacBook Pro lineup. Launch that along with a Steam Deck competitor handheld.