Shimano 10 speed road (before the new Tiagra 4700 10 speed) is the most sensitive system to any cable/housing dirt, imperfection, as well as very sensitive to any play in RD pivots and misalignment of the RD (11 speed is the only worse on that account).
So for commuting I don't see 10 as an "upgrade". Especially the pre-Tiagra 4700 10 speed.
Whenever looking for "upgrades", I always ask people: "what do you want to upgrade? What is your goal? Faster shifting? Easier climbing gears? What exactly you need to improve on the bike and what do you expect the new upgrade will bring?" Then I can give some useful advice to help that particular person on their particular bicycle.