If there's ever a SOF Variant of the QBZ191 or a QBZ20 Series, Right now it isn't very modular and lacks ambidextrous ergonomics.
Honestly I wouldn't mind if they take some inspiration from the MCX LT and shove that in the QBZ19
For the standard PLA QBZ-191 I think the ambidextrous ergonomics are not actually too bad, specifically there's fire select on both sides, and while the charging handle is "only" on the right side and the bolt release is "only" on the left side, when reloading magazines from a held back bolt it wouldn't work too differently from either side (smack the bolt release on the left, and tap the charging handle on the right).
The paddle magazine release of course is ambitdextrous by design.
The bigger question is whether the export 5.56mm QBZ-191 will have a magazine release on the left side.
Tbh if these end up being uncompetitive on international market for high end rifles (very likely) and they end up offering iterations with improved modularity, accepts AR parts, better handguard that actually holds zero, not fuckoff long supressor, etc there's a chance that the PLA might take interest in it, leading to improved QBZ191 variants at a wider scale than individual purchase/small unit contract custom handguards (fingers crossed that next wave of SOF reform is given actual funding)
I don't even think they necessarily need an export variant for that to happen, I wouldn't be surprised if the PLA eventually commission an updated variant once they put a bit more money to infantry stuff in the near future.
After all, the suppressor is not something which is limited by the rifle's design per se (they can design a new suppressor), and developing a new FF handguard is well within their means and they're willing to procure it as well (as seen with QBU-191), heck they could even develop an entirely new upper receiver group if they really wanted to.
As always the question is whether it's actually worth it for them. I suspect for the PLA at large, just equipping everyone with a new assault rifle of better build quality, a flat top picatinny rail at a reasonable height that allows for a decent cheek weld, and mass fielding a fixed magnification prism optic, is already splurging a little.
What might be useful is if they wanted to give their SOF units and more specialist units the ability to make higher end procurements, then a limited production run of a "TZBD variant" QBZ-191 with a free floated handguard and new gas block design, or even a whole new upper receiver group, could probably be developed and bought with decent economies of scale -- over the whole PLA there's probably some 20+ SOF brigade equivalents that could benefit from it (though of course not all of them will need a rifle).
