Probably could have been more specific. LOL
I like AC for various reasons (yes, you all can call me crazy) but I hate picking days to try and search for flights. I can plan far enough in advance with flexibility that I try to hunt for fares / flights that are decently priced up front, and then usually luck out on LMU's, or prebook preferred seats for worst case. I'm less concerned with fare flexibility ----- usually once booked I rarely need to make changes (and only once did we have to because a client caught covid) and it was far enough in advance to still make switches.
I would just love a tool that I can say "Here's my range of when and where I want to fly - show me best fare options" and then go from there.