randomness is sad model for shield-link, is nerfed too much

[xponen]

Randomized shield link is too stupid, it have high chance to not transfer charge at all (because other unit is full) and spend too much time transfer charge back & forth (because it choose almost full unit).

I raised the issue here: #88
Why do we have to nerf shield-link to nerf Felon? just nerf Felon directly.

Suggestion:
I'm thinking we can force shield unit to remember previous link to avoid back&forth case. I have tried with the idea of checking for neighbour with lowest charge but that is too expensive.

[xponen]

hmmm, maybe I was wrong, idk :/
i'll just forget about this then...