Got my update to 4.4.2 last Monday. I noticed the following issues as of today (after the update). I did the cache clear using boot options.
1) Battery draining faster
2) Rebooted by itself twice
3) Duplicate email notification icon with sign-in error issue continues after the update
4) Applications seem to open slowly
5) After sending a group SMS using the default SMS program, if someone in the group replies, it is creating an individual thread showing only that person in the chat instead of the group. This problem was there in 4.4 as well but not in Jelly Bean. I switched to Hangouts as the default program and this one works as expected.
I am not sure Motorola will release another update for this phone again. Even if it did, I don't think it will be anytime soon. I guess I have to live with these issues until I change my phone.