How will something larger than b-2 be tactically relevant?
It has to do with bomb load.
B2 Was designed not as a support bomber but a pure strategic bomber.
It's a penetration bomber meant to enter denied airspace and drop strategic weapons.
I'd say the B-52 was tactically relevant and it's bigger than the B-2...
I would say you are only partially true. B1 is the better tactical bomber.
B52 suffers from its age it's engines it's huge cross section.
B52 In even a near conventional conflict is only meant to launch cruise missiles.
It bomb load is impressive but limitations on speed and ability to get on target mean unless you are looking to carpet bomb a insurgency it's no good to support infantry or conventional operations.
B1 with its speed is the better tactical bomber and has more potential uses like maritime strike in conventional conflict.