Lets say you have a building at lvl 1 and want to upgrade it. Should it be possible upgrade from lvl 1 to any other lvl directly?

eg.
if lvl 1 to 2 cost 10,000 and 4h
and lvl 2 to 3 cost 20,000 and 8h

Could you have just 1 upgrade that went from lvl 1 to 3, costing 30,000 and 12h

I get annoyed when an upgrade finishes in the night and I have to wait to the morning to start again. Why not just combine them both

Thoughts? Could this be implemented?