Phaeton body rivets?

[Thearne3]

I exposed the rear quarter of my ‘29 phaeton to repair the post bracket that holds the support for the folded top. (Another thread)

There is a support directly below the door latch area that was riveted through to the wheel well area with two large rivets. In the 70’s when the car was restored, they didn’t bother to drill out the rivets and redo. They just tack welded the bracket. The tack broke and so the bracket provides no support. Still, it seems to be pretty solid.

So what would you do? Drill the rivets or tack weld (again)? Or leave it alone?