...to go back to past prctice of resending WU's after 48hrs as it used to be in the past.

This would stop hosts delaying tasks for 5 days, speed up turnaround and make more work available quicker.

Agreed.

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1 Corinthians 9:16 "For though I preach the gospel, I have nothing to glory of: for necessity is laid upon me; yea, woe is unto me, if I preach not the gospel!"
Ephesians 6:18-20, please ;-)
http://tbc-pa.org

I disagree. However a smarter scheduler would be much better.
Alternatively we could set the deadline for 3 days, but no re-sends please.
The re-sends won't solve the shortage in the long term, only for a very short time.