None of the present day USB pattern connectors will be able to completely replace the jobs the cigar lighter pattern connector can do, they simply don't have the the physical area of connection to supply 180W at 12V (15A).
If we continue to need to run tyre compressors, portable fridges, high powered flash lights or other higher powered or motors that have high stall currents, then we will continue to need a some sort of connection with that degree of current handling capacity. If we changed away from the cigar lighter pattern, there would be a lot of items that most of us already have that would either be thrown away or need a new connector fitted. Personally I'd much prefer a more secure connector.