aviatorpk,
I, too, assume you mean "improved climb".
On the big Boeings at least, V2 is always below Vmd for the T/O configuration. Hence going faster improves climb performance - better L/D ratio. This requires, of course, more field length, higher V1 and Vr speeds and the big one, no high close-in obstacles.
It needs careful analysis, not spur-of-the-moment stuff to ensure that there are no hidden snags like brake energy limits etc.