Not going to happen. The design is not just for WCG, it's a x-project scheduling rule to process on the basis of FIFO, first in, first out. Only when there is threat of overrunning the deadline [not completing in time], will there be prioritization on basis of Earliest Deadline First [EDF]. This is automatic, no user management required.

edit: It used to be possible with certain clients to use the "Switch application every..." to some inflated number such as 6000 minutes, to auto-force the short deadline tasks ahead in the queue [those that have an original deadline of 4 days for instance]. Those running with large buffers that cause tasks not to make deadline have created their own problem. Reduce the additional buffer / connect about every sum total to less than the shortest deadline i.e. if the shortest deadline of any work your client receives is 4 days, set the sum total of connect/additional buffer to e.g. 1.00 + 2.00 days. Then all tasks make it easily. If your machine is part time computing, on an irregular schedule [dont know when on and for how long], reduce the connect/additional buffer to zero. This way the client only has tasks that are being run immediately upon receipt. In a nutshell.

Without explaining why this is wanted or needed [e.g. scenarios], there cant be a direction on how to best customize the client settings of web preferences.