I don't see the point in replacing CFLs with LEDs, unless it's in an application where it's going to be turned on and off lots, such as a toilet.
Depends, if the CFL has already seen a few thousand hours of operation, many are so dim that the 11W bulb produces hardly any light during first minute, and even then too little; especially if installed in a cold place like uninsulated attic or basement. Can be replaced with a modern 5W LED bulb with the additional benefit that you will be able to see something without first waiting for half a day (which a minute feels like when you want to do something instead of waiting for the light).
I hate waiting for technology to start operate; such as Windows taking anything from 30 seconds to 3 hours to "install updates" before it allows me to use my computer. Even the varying 1 to 5 second delay of traditional fluorescents with mechanical starters sucks, and the 1-2 minutes of CFLs is beyond acceptable.
Color rendition tends to be equally sucky with CFLs and LEDs. Both have better options available, but hard to find.
Generally, I'm quite happy with how things are with LEDs. Incandescent bulbs were often crappy quality as well, very typical failure mode was cost-optimized fuse (proper bulbs have internal fuse) causing the bulb to fail explosively, bringing out the main breaker or blowing even a 16A gG fuse. Good riddance.
And CFLs, pfft. Salesmen and packaging say "get 11W", but have to buy a massive 20W bulb to replace a 60W incandescent to get any actual light out right from start, then it's too bright after some time, until it's too dim after 2000 hours. And it weights so much and doesn't fit in half of the lighting fixtures. And most of the light goes the wrong way because of the stupid emission pattern. Add to that ALL the same roasty electronics problems we have now with LEDs.