So, enough with the generalities ... what's the plan? Where are you going to mount a bracket? Do you have a plan for reinforcement? How would you operate an outboard from this platform? Do you plan to leave the motor hanging on a bracket or remove it? Do you want a motor mount to interfere with the swim platform? How would you deal with the ladder? Do you really want to make a spectacle out of your transom for the very odd chance that you might someday want to get out of a jamb with an outboard motor? If you keep the motor on a rail mount, would you really want to transfer it to a motor mount in rough conditions while balancing on this swim platform?
You are thinking outside the box, but I think it's a bad idea overall. It's a very undesirable modification for a circumstance that may never occur. Or if you are in a real jamb, you might not be safe in making it ready, limiting your ability to use it as intended. I would put more effort and expense into making sure the diesel is reliable.
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