You do not want a tank that expects to tank damage to have a bustle autoloader.
Type 15 is ok because it's expected to benefit from the extra RoF as it shoots at opponents that can't fire back and can outrun/avoid opponents that can.
Bustle autoloaders mission kill the vehicle from just a very minimal hit on the side or rear by dismounted infantry, or worse nowadays, FPV drones.
New tank might have low weight, but it seems the protection specifications are around the T99/latest Abrams/T90M. Presumably achieved through advances in materials and ERA design. So it's meant to take hits, even from side/rear in urban combat situations. For this, the bustle autoloader would be very unsuitable.
personally based on what happen to russia tank/IFV/APC force in ukraine since 2022 > today
im ....kind of in favor of crew lives saving design
autoloader may benefit poor countries don't have the ability to product tank/IFV/APC because those countries have nothing but free meat bag
but for powerful nation like china right now which have even greater production ability than russia , save lives better
highly skilled vehicles crew take long time to train , vehicles replace is no big deal
T-72/BMP crew safety when hit issue currently cause russia big trouble , lead to even more vehicles/crew lost like many video on reddit (even the most pro-ru sub like r/russianukrainereport)
there are countless video of russian T-90/T-80/BMP-2M/BMP-3 all the best stuff doing "questionable" tactics lead to easy lost all over internet
i don't want to see those issue happen again with china armored force