You're very confident of your arguments, but there is no guarantee you've got it right, I don't think you have.
Personally i think if SISU lose the JR they'll sell up, there is no business case for building a stadium that isn't even in Coventry after having alienated 80% of the fan base, there is no love for them, they'll face a seriously depleted fan base. The major investors know this.. I suspect the JR is simply a last throw of the dice.
The local election will change nothing, it will be same old, the football club is a side issue & most people don't vote anyway.
Even if SISU actually embark upon their cock-a-mamie scheme to build a new stadium it will take years just to get planning permission.
During that time, provided they get regular promotions as their stated ambition, it is likely Cov Utd will attract significant support, just because they're here & CCFC are not, the net result being very a negative one for CCFC.