The problem with the Pro line is while professionals have diverse requirements the line only seems to cater to the groups that travels a lot.

Some people need beefy CPUs, some people need beefy GPUs, some people need lots of memory, some people need lots of connectors to avoid a dongle mess.

And instead of offering at least one model that can be fitted with all of that, either as standard or as option, Apple decided that the only group that matter is those that travel a lot and favour light laptops with long battery life.