At this point I think the most important project, from a PLA perspective, is the so-called EW Z-20 variant that was first spotted not too long ago in the form of a testbed. Not only will it provide critical over-the-horizon targeting solutions for long-range artillery and other vehicles, it will provide a critical EW screen against MANPADS, short-range SAMs, radars, or even AAMs. This would be a game changer in any scenario in which Z-20s are counted upon to ferry in troops or materiel to "hot" landing zones.
EW helicopters don't affect most MANPADs in any way*. They won't silence short-range sams: even if they're radar-guided, when they're engaging - you're already at LOS within burn-through range = it's an omae wa mou shindeiru situation.
If coming under fire is unavoidable - the ways to get your troops to the landing zone are:
-forward AA sweep immediately before transport group;
-close-in helicopter screen;
-fitting
all helicopters with self-defense suits.
-accepting that there will be casualties - CSAR on immediate standby(i.e. flying with the strike group itself).
Gostomel rush over Kiev reservoir and beyond is basically a full example of that type of operation.
EW helicopters work against tactical comms, datalinks&other sorts of tactical radars(counter-battery, intelligence). Which is probably more valuable than an escort helicopter jammer.
*other than those that are under central command - their datalinks are vulnerable of course, but this will 'only' degrade them to normal manpad level of (lack of) situational awareness.
