Laches or unnecessary delay would spell the death of the Supreme Court, as we purge it with our own hands.

There was no guarantee of injury to Trump before the rules were changed (and no, the June 2020 election does not count as injury to Trump). The only time where Trump could start claiming the injury as definite was November 3rd. He protested the injury immediately and brought cases as soon as he could properly collect enough evidence to make the cases (any sooner would not have been "ripe" enough to bring to court, as facts were still being discovered).

Claiming it as "too late" simply because he was forced to follow the courts' own bureaucracy (including rejections on technicalities that could have been resolved by an honest court instead of forcing do-overs at every turn) falls outside the spirit and all practical interpretations of laches as a whole.

In the same manner, any more unnecessary delays on technical grounds with no outreach or reconciliation to make the case hearable would show that the court is refusing to hear the case while trying not to outright say so. If our courts are not willing to even LISTEN and HEAR the case, and quell the cries of justice from 70+ million voters, then they stand to have more than just a few "rioters" to be afraid of in the future. No justice, no peace will ring truer than any bell.