Consequences of extremely thin Republican Majority in the House

Question for the collective mind: if, as appears likely, the Republicans hold the majority in the House with only one or two votes to spare, what are the chances of cross-party defections, deaths, forced resignations due to corruption convictions, or other events to actually change the majority back to D before the 2024 presidential election? I would advise Nancy P to continue exercising with a spare gavel just in case. 

Of course similar events conceivably could actually widen the gap and make the R majority larger, but there will be at least some pressure on the NY moderates, for example, and possibly one or two others, to consider shifting parties; pressure which will not have much of a counterpart the other way around.