Subject: Re: delay thresholds - are there any?
this is a legal question...
is there any level where repeated, rejected, and trivial requests for delays can be completely ignored?

I am not a litigator, but here's my Civil Procedure law school (faded memory version) answer. A judge almost certainly won't completely ignore a filed motion, but they can always just summarily deny it. Absent some specific local rule of procedure, they don't have to provide a detailed explanation.

If the lawyer isn't taking the hint, the judge can impose sanctions for repeatedly engaging in duplicative, untimely, or obstructive motion practice.