That radiused fillet you point out is not a problem. It is done like that to keep the crank from cracking there.
The area of concern is the inboard segment of the crank where the rollers run, and there are two black bands on there that look like burnt oil. That area must be completely smooth and round, and the proper diameter for the rollers to run on it properly. If it is not, then a new timing side shaft is called for, or a proper metal surface repair and heat treat for rollers should be done to that shaft you have. The clearance for the rollers is quite precise, and the surface needs to be quite hard, and it all needs to be perfectly round, and smooth and even.
Get a figure from a service manual, or from Hitchcock, on the proper diameter of that shaft in the bearing area. Then you know how close you are to being good, or how far out it is.
Regarding the big end, if it passes the no up/down play test, it is probably okay. However, we don't know how long it will stay that way. It is unknown for future lifetime.