If Democrats were able to pass the For the People Act and the John Lewis Voting Rights Act

see their numbers increase.

The current number gives too much importance to individual justices.

but striking down those two, should we manage to get them passed would underline the importance of expanding the court and pointedly showcase their right wing, "no one but rich white dudes should vote" beliefs.

McConnell essentially already has (and would do more given the chance).

I think we should have at minimum 13, one for each circuit court, ideally enough to have two to four 7 judge panels running all the time.

With randomly chosen panels it is easy for justices to simply not be placed on cases where they might have even the appearance of a conflict of interest and it is much harder for lawyers to tailor an argument to a specific justice.

There could be more cases heard and the loss of one justice wouldn't be a disaster or a windfall.

If I am understanding correctly, in layman terms, the states can run there own elections anyway they chose, "unless congress says otherwise". I think this is Supreme Court proof.

I worry with so many radical Republicans racing toward autocracy.

They will try just to continue being Dicks.

the Right to Vote is a Constitutional Right.
The will favor the States that do not adhere to these laws.

One that guarantees the right to vote for eligible voters. It also wouldn’t hurt to codify adequate funding for elections. Voting is foundational to our democracy.

too many Red States.

I fear we will no longer have a Constitutional Democracy.

We can’t take anything for granted at this point.

... at the same time we have the president voted in in most states so therefore the voting happens at the same time and would be called prohibitive to have two different elections for the federal government for most states.

Therefore if Democrats are able to impose voting rules for the Congress most likely it'll hold for the presidential also

Article I, Section 4, Clause 1: The Times, Places and Manner of holding Elections for Senators and Representatives, shall be prescribed in each State by the Legislature thereof; but the Congress may at any time by Law make or alter such Regulations, except as to the Places of chusing Senators.

On the other hand I don't see the Roberts Court leaning more towards plurality in America.
There's a reason why America is lower on the democracy index than we were supposed to be

The Robert’s court is clearly no friend to plurality.

And because of that, passing the new laws now would help ensure Dems grow their majorities in 2022, which would allow them to more easily pass laws expanding SCOTUS from the current 9 seats up to a minimum of 15 seats, for a new 9-6 liberal majority. That would help protect voting rights by the time any appeals reach the court.

In addition, expanded Dem majorities would help pass statehood for DC and PR.