Could be great idea but I have a doubt if it won't troll players, Like someone is working in Iron Miner and got group destination then squad destination he will be trolled, Completely trolled though, So how about making another blip for squad cause groups' will troll him like got 2 same blips on the map and he doesn't know which one is for group and which one is for squad, He has to open F11 and check "group destination" or "squad destination" but it still trolling, You gotta choose another blip for that so players won't be trolled then I can vote positive in that..Neutral.
Iron Miners don't get blips anymore. Although, as rare as it's for a squad & a group to mark different destinations the same moment, you can suggest adding a way in /settings to either disable squad or group destinations or even both, if you felt annoyed.