I think it would be great to boost a worker's speed using gems for a period of 24 hours in the same way of boosting the elixir mine and gold mine to double.. So say a building construction has 2 days left, by boosting the worker, the building will be done in 1 day... Those buildings that take 14 days can be brutal... Not everybody has 1850 gems to
Do a quick finish... I think 50 gems for a day boost is a good number to start with.

