If we take a look at pilot wave, we realize that it deforms vacuum only in direction of particle actual motion, that means that in another directions the vacuum remains relatively flat. The perceived/observed inertia of electrons would thus correspond the deform of vacuum observed from particular direction. The effective mass of electron doesn't decrease in perpendicular directions - except the fact, that increased vacuum density makes the rest mass of electron relatively lower as a whole. What de-Broglie wave affects instead is the projection of particle spin into direction of particle motion: the half-integer spin of electron changes gradually into integer spin of boson - in another words, the fast moving particle gets widespread and it gradually changes into a charge wave.
Yep, any acceleration of particle ads another undulation to its pilot wave - actually the more, the higher derivatives of motion gets. In my theory the cold fusion results from Astroblaster effect during sharp collisions of multiple atoms along single line, during which the orbitals at the place of collision get literally shaken and their electrons gain high relativistic mass for a brief moment of time.
Dear Zephir,
Could your model be related with polaritron plasmons and latest Google patent explanation ?