The Trump legal team is not claiming any of this stuff in court filings because the courts can never rule on this stuff in time.
The claims from the lawyers focus on Equal Protection. That’s actually a much more powerful argument. Certain counties in the relevant states followed a different ballot acceptance/counting procedure than other counties.
This is exactly equivalent to what happened in 2000 when Gore’s team asked for a different chad puncture counting standard in Palm Beach, Broward and Miami Dade counties than was used elsewhere. The Bush team pointed at a violation of Equal Protection and the USSC found in their favor, and did so by more votes than just the conservative/liberal justice ratio. It was powerful stuff and the court had no doubt about it.
This will happen again. It is a precedent. Stare decisis. Georgia’s Fulton County had different signature verification standards than other counties. The only problem is the remedy requested is much more severe than in year 2000 Florida. Erasing all of Atlanta’s votes is a real problem compared to simply not allowing an additional few thousand votes from Broward county.
And that's precisely why NO court will touch equal protection or any of the other more esoteric points being argued.
IMHO, the ONLY path to victory is to prove the Dominion fraud. That's impossible to ignore. Equal protection, "mean D guy that wouldn't let our poll watchers in" or anything else Rudy and Jenna are arguing are unlikely to go anywhere - for exactly the reason you mentioned. No court is going to "disenfranchise" hundreds of thousands or millions of voters to fix an issue with a comparably small number of voters. Never gonna happen.