It looks like there's room to sheet metal screw a thin metal plate over the holes for reinforcement.
Yes, there is. What I'm thinking is to tape a piece of cardboard wrapped in handi-wrap to the bottom of the door where's there's missing metal. Whip up a batch of fiberglass and lay a puddle in the bottom of the door, they lay a piece of aluminum in the channel submerged into the glass where's there's missing metal. Let that cure and do it again to clean up and help reinforce the door bottom. I also have a bunch of different sized F-glass mat that I can use too if needed. I may have to do that to get that triangled center section fastened to support the skin to the frame of the door. Then remove cardboard and lay a spread of F-glass, or bondo across the bottom to fill in those rusted out voids and to clean up the bottom.
If I can find a 1-3/4" by 1" angle metal for that inner lip would be great, but I don't think I'll find anything close? That's where I'm going to have to get creative. Think Gunny Highway's you improvise, adapt, and overcome! All rust has been painted with 2 coats of POR-15, so I shouldn't have to worry about any more rust?
I'd like to get this whole project done before the cold front hits but that's not going to happen, I'm going to temporally insulate the bottom of the door until we get some warmer weather in order to do the repair. Even with the door 60% insulated I do notice an improvement out there. I want to stop the condensation on the door!
This door in cold weather is like a very cold beer can on a hot summer day, it sweats like a MoFo which would explain the rust at the bottom!
Then there's this issue of gaposis at the top left corner below the header where the house has settled, I just stuff a old T-shirt to close that up!
The right side for comparison!
Any and all comments, critiques, criticisms, or ideas are welcome!!!!