Given the issues other airlines -- including the likes of AA -- had over the years with even being able to start displaying available upgrade instruments online, I am not surprised that these are still in physical paper form.

DL management's priorities clearly do not have the DL systemwide upgrades placed highly given that DL management (a) designed the upgrade instruments in such a way that the overwhelming majority of the DL systemwide upgrades are pretty much useless to even most DL Platinums; and (b) wants to wean even more customers off of the DL systemwide upgrades. Given that reality, I see no reason why DL management would prioritize highly "computerizing" these upgrade instruments unless DL management has a change of heart and decides to actually issue customer-friendly systemwide upgrades going forward -- that's something I don't see happening unless there are some major changes in personnel and other internal arrangements at DL HQ.

As the systemwide ugprades exist now at DL, they aren't designed as much to reward customers for their business as much as they are designed to: (a) fool customers into thinking they are worth something; and/or (b) going after woolly mammoths who don't think about getting fleeced.