I have recently decided to no longer publish, or at least publish less, with a well respected journal in my field. How do I let the journal know in a meaningful way that the submission process is very painful?
The required Microsoft Word and LaTeX templates are extremely dated and do not match my (or anyones) workflow. The review time (6 months), number of reviewer (3-4), number of rounds of review (3-4), and delay from in press to available online (8 months) are all too much. The lack of communication is extreme. The online system tells you if the manuscript is on your desk or the journals desk and nothing more. Editors do not respond to queries other than to tell you it is being reviewed.
I suggest that you be very careful OP. Powerful people in the field can get pissed off over trivial things, even if you are trying to be polite and constructive. Don't make this move unless you are already a tenured faculty member at the place you want to spend the rest of your career.
If that isn't you yet, then you need to just bide your time. After tenure, you can contact all of your friends in the field, and maybe even one or two big wigs and start a little movement. Publish an open letter to the editor of the bad journal signed by all these people who say they aren't going to publish at that journal until they get their shit together. That's the only thing that would actually bring any pressure to bear on the editor.
But seriously, don't try to do that if you're still a junior person in the field.