Those insisting that anything less than the prescribed Mi She’beirach evinces a “lack of hakaras hatov,” sound suspiciously like those who insist on “only my hechsher, my rav, my particular chumra(s) are acceptable. Otherwise known as: “my way or the highway.” Those urging for the Mi She’beirach sound as intolerant as some of the chareidim some of you criticize!
This argument, like so many others, is totally out of place. To get the chareidi masses “on board,” you are wasting your time and breath posting here or anywhere. What you really need to do is meet with the gedolei Torah that the chareidi tzibbur listens to, and PERSUADE THEM that you and your ideology are correct. When you do (not very likely, but you can try), the multitude of chareidim will follow their leaders rulings.
Otherwise, you will just have to apply the same explanations and excuses the MO/Dati Leumi folks use to answer various chareidi objections to some stuff that they do (or don’t do): you have your rav and your da’as Torah; I have my rav and my (actually my rav’s) da’as Torah. You can’t use that claim yourself while expecting a chareidi person to abandon the rulings of the gedolei Torah that he respects. Just as you claim you do regarding the rulings of your rabbis.