I feel there is an obvious appeal to the MacBook Pro 14"/16" with M3. It has a good display, lots of battery life, and plenty of performance.
I'm more confused about the "M3 Pro" variant. Its performance either seems to be overkill or not enough. A more sensible lineup to me would be:
M3 - 2 thunderbolt ports, dual monitor support, memory up to 8-24gb (2x4, 2x6, 2x8, 2x12, 2x16). In the MacBook Pro, always comes equipped with second tier upgrades.
M3 Max - 3 thunderbolt ports, quad monitor support, 32-128gb (8x4, 8x6, 8x8, 8x12, 8x16).
Then again this wouldn't let Apple upsell people on basic functionality like dual monitor support so they'll never do this.