Thank you for your well detailed post. I understand where you are coming from based on the points you so clearly pointed out in your writeup... However i feel it a point of duty to point you in the direction, where you may clearly be mistaken about what you are putting forward.
Logos is the written word of God, we both agree on that so far...
But concerning Rhema, i must let you know that Rhema is the spoken word of God, and should not be belittled or undermined. A Rhema is a word one receives either silently in their inner spirit man, or audibly clear as when a man speaks with another. God still speaks to people directly, testimonies abound to attest to this.
So please understand, even if people abuse the use of Rhema, it does not invalidate the effectual power in Rhema.
Thank you for this opportunity to deliberate on matters of Christianity with you. Well done!