What do the More Modern Warriors think is a workable solution for a 'do all' Ruck?
Before anything, let me say that, yes, I know that equipment/kit should be chosen on METT-TC considerations. That's a given.
However, the question posed due to considerations the miles and miles of advancement in rifle carriers and rucks even in the last 10 to 15 years. Say for example, the needs of a team member carrying a ruck. a DSM rifle, and an AR/AK in either a survival or tactical team situation.
There's the Eberlestock solution, from their company located in Boise, Idaho. They make really great packs; I have one of their hunting packs, and it's really superb!
Here's their concept in a picture - a good sized, balanced ruck with a weapons carrier that is mounted and can be dismounted and used as a drag bag if necessary (and they have several models to choose from in various sizes: