So the bottom line is that avoids are in a very volatile area of memory. Hopefully that will be different down the road. It seems intuitive to me that an avoid is an avoid, man. I dont wanna hear it for whatever reason.
Clearing an avoid should be a user option, not a factory default when disturbing any scan groups, or scan process.
Reasons being (i really tried to remain apolitical here):
1. lets say i dont like pennsylvania (not true, its just an example, but i really dont like ashburn, virginia - hi) and i dont want to hear anything to do with it ever -- i am vindictive and hold a grudge like that and want to ignore any channel/frequency forever with the push of a button.
2. qrm anywhere in the bands, 50mhz, and airbands specifically, I live in an urbanized area, prone to rfi.
2a. i dont mind scanning through a range, but some freqs just have qrm blobs and spikes, what i thought was a perm avoid should be a perm avoid so i dont have to waste time with static because i dont like to ride the squelch knob like a bar-fly on sailors payday.
3. too much chatter on tac channels (it could happen)
3a. not interested in most skywarn ham channels, so i avoid them adhocly when i feel like it (the allocation says skywarn but thats not exactly true 24/7, its mostly guys talking about ham stuff, i can clear the selected avoids when the actual storms happen, which is what i will actually do)
4. some dispatches can heard on other loaded channels, dont need to hear them all
5. airport atis going 24/7, k, dont need to hear atis all day.
6. too many ems calls on a channel, i can only take so much drama before i get numb to 5 suicides a day (which actually happened sunday here)
7. not being around all day to ride the squelch on noisy channels, to prevent a unnecessary recording taking up replay space with either static, chatter or ragchewing.
8. if i kick off a scan and reload a group i come back and hear an avoided channel sitting there open for however long it took me to fetch a coffee or beer, that chaps my hide.
9. some regional airports i just dont care to hear from.
All compelling cases for a real avoid approach.
Thank you all for your valuable replies, hopefully I can elmer here soon enough.