They should change the name to Mac (more simple, like the MacBook) and make it beefier. I want a Mac Upgrade Program. I want it to have a mid-range discrete GPU, mid-range six core processor, a fast SSD, and upgradeable RAM. Somewhere around $2000 every four years, and after you've made 24 months of payments, you can trade in for the new model. Around $500/yr to always have a new Mac, or you can pay it off if you want to keep it.
I do professional work, but it's mostly photography, graphic design, and web design/development. I sometimes edit video, but it's rare. I've come to the realization that the only reason I buy higher-end Mac hardware is because I want it to last a long time. But I would be perfectly fine with mid-level hardware if I had a bi-yearly upgrade path. And after two years, a new mid-level machine is likely to be similar to a two year old high-end machine. After four years, it will be even better. I'm currently on a 6 year cycle with my personal Macs (my work one is in my sig because I gave my personal one to my grandpa).