The ICH will be more or less neutral in terms of impact on the Champion Hurdle market, unless Jezki beats Hurricane Fly convincingly.....in which case HF would lengthen and Jezki would shorten. If Hurricane Fly prevails, people will take the view that it's fair game, expected too, given HF's propensity for the track, and Jezki is only really being prepared for one race in March. This is a scenario that would be unsurprising, and it's impact on the CH market is therefore likely to be negligible, imo.
The only e/w bet that makes sense at this stage - discounting speculative tilts on outers - is Jezki, as he is the only (expected) runner whose price is likely to shorten to any significant degree, between now and the Champion Hurdle itself.