What exact buffs are you thinking about? I mean, look at what i explained about Thargoid interceptors above. Give turrets ten times the damage when mounted on the T10, the turrets would still fire dead center and do ten times no damage. By itself, it wouldn't help.I would say big ships could use some exclusive buff to turreted weapons and even more distinctive manouverability difference from other classes.
On the other hand, if Xeno scanners would get like 3 km range, the described problem would actually be much reduced. Then a turret buff would help the ship a lot. You'd still need to dance around the Thargoid to get a shot on the hearts, which is not that easy on the T10. But it would help a lot. Making the T10 even less agile or slower, on the other hand, to make it more distinct, would absolutely kill it for AX duty.