I hate fantrax with a passion. The site and app are dogshit. (although I haven't looked at it since I left LOD, maybe its improved?).
I would vehemently oppose the move... if I didn't have 2 kids and no time. I like the spreadsheet a lot (like my 3rd child), but it can be work to maintain.
I won't endorse a move, but I wouldn't rage-quit