As a GM I had a chat witch one of players about Chapter Squad Mode Abilities. I believe that not only us found them to be somewhat confusing. I ruled that squad leader can affect other battle-brothers using his chapter abilities, even if they aren't from his home chapter. I think that it is more in line to what leader is supposed to be.
But then again we found another problem. As it is now, Tactical Marines 'Tactical Expertise' is rather meh when squad leader also can share chapter abilities. It also seems, that Tactical Marine is not that much better when it comes to actually choose, who should be squad leader. So we decided that it wouldn't be bad idea to somehow 'upgrade' 'Tactical Expertise', make it unique. My player came up with examples how to do it, such as allowing for battle-btothers to be under influence of two separate squad abilities for brief moments (at GMs discretion) or to grant squad one more of codex abilities apart from those allowed from oath. Of course it should be somewhat limited (once per session ect) and it would be in effect only when such Tactical Marine is squad leader and have 'Tectical Expertise'.
However we both don't want to make this speciality too good and in effect always chosen as leader. Even if I think that is what makes Tactical special.
Any thoughts?