Originally Posted by rtwpaul
it was one of the first things i checked when i looked the bike over, nothing done so i can brace it accordingly, for strength and longevity too
Sounds like you're on to it
The amount of metal you need to add is fairly minimal really.
Another thing to think about while modding the subframe is the rack attachment points. I'm currently making new soft pannier racks & stronger tail rack mounts & have bored out the rear bolt holes to take 8mm rather than the std 6mm fasteners which have broken a couple of times.