Coherency auras are very nice for team-play and increasing the radius can be useful, but these talents fall flat. Between being irrelevant if your team sticks close together and being somewhat useless if multiple teammates stack them, these talents just aren’t worth taking as much as they should be for a team based game.
I have a suggestion to improve these talents and make them always somewhat useful. Add an additional bonus where they also increase your aura effect by 25-50% alongside the radius increase. This would add more incentive to take these passives while also allowing for more potential supportive talent investment.
Another potential change would be to alter how the aura radius scaling works. Perhaps instead of just increasing the user’s radius, the talents could increase your entire teams coherency radius and stack with other teammates’ aura radius talents. (The radius boosts would probably have to be a bit smaller if they stacked though.)
Teamwork makes the dreamwork!