I prefer collecting and recording information on the Family Tree software. I understand the attraction to the online version for sharing purposes but the online version does not have the functionality or as great of options for storing and viewing of data as FTM.
As far as hints, hints are very useful for research. However, in addition to reviewing hints, it is often necessary to search using your own criteria. This is due to transcription errors and name variations not caught by the algorithm used for the leaf hints. I scan the selected hints for anything useful and record and/or merge the desired information and then move on to doing my own searches. For example, I have found that many of the 1940 census records are so poorly transcribed that they are not flagged by a hint but I can find them through my own searches. While I could see that the "ignore" function might be useful for some, I can more quickly just scan and write research notes as to what has been researched.