Is it worth continuing development of Falcon Heavy ?

[Norm38]

FH gives them data on how hot those inner engines get. 27 engine steering feedback control loop. They'll improve their models and feed all that to BFR development. 
I like that they're running a lot of static fires. Get that data.

[MATTBLAK]

Heh - I'm hoping that with an upper stage upgrade it'll maybe replace the SLS...

[guckyfan]

FH gives them data on how hot those inner engines get. 27 engine steering feedback control loop. They'll improve their models and feed all that to BFR development. 
I like that they're running a lot of static fires. Get that data.

Heat should not be an issue at all for BFR. Look at RS-25 tests. It freezes over while being fired. Methane is not quite as cold but should have no problem to remove the heat from the engine bell and combustion chamber ouside.

Edit: added "for BFR" to clarify.