What you are doing with the kids is working. Do more of this. Be the best dad. It is PERFECTLY OK for you to have a different parenting style than your W. If she says anything, listen and then validate: "I am sorry you feel that way"
What is best for your kids is best for you. That statement makes all my decisions easy. DO THE RIGHT THING.
I strongly feel that what is best for the kids is to have frequent and equal contact with happy parents that treat each other with respect. You can only control 1/2 of the R with you W. Do the right thing by modeling good behavior. Standing up for what you believe (Dad and marriage), accepting things you can not control (IE your wife's selfish decisions and the possibility of D) and setting boundaries that gain you respect.
"What is best for my kids is best for me" Amor Fati Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712