Agree on many things, disagree on some.
Jumping to warp from standstill has always been considered viable procedure, across the full range of spinoffs and timeframes. Orientation, motion vector or acceleration vector have seemingly nothing to do with it. But an obvious "point and shoot" rule does indeed hold for nacelles and warping, necessitating some sublight reorienting before warp; additional sublight maneuvering could well take place at that point, for tactical gain.
Impulse requiring warp coils unless special ones are provided is an appealing idea. One might even say that the interesting blue dome doohickeys on certain starships are devices for using the warp field for impulse massplay; their absence would then indicate dedicated impulse coils. Thus, ENT era and TOS movie era rely on warp engines for impulse; TOS era and TNG era largely rely on separate subspace coils.