China is on the modular chassis bandwagon as well apparently. Light Tank/Fire Support Vehicle on the same hull as an IFV.
A new family of armored vehicles, including a modular platform that serves as the basis for both a medium tank and an infantry fighting vehicle (IFV), was spotted in China. The images, published on the Chinese social media platform Weibo, show the modern vehicles loaded onto rail transport...
defence-blog.com
Same idea as the CV90 & CV90120 combo or M10 Booker & XM30 combo (or a LAV6.0 & LAV-120 combo?)
Question being is the juice worth the squeeze? Makes sense for a number of support vehicles...AD, ATGM, Ambulance, Command, mortar, etc. but if you're using IFV's you're still likely to want MBT's in support so is a light tank necessary? Unless an APS system comes along that can reliably defeat tank rounds you're still going to want a heavier MBT. Unless the plan is to use them as a cavalry vehicle.
Too many issues with designing a main battle tank with the engine in the front to make a HAPC & MBT combo work unfortunately. Maybe if there is a breakthrough in solid state battery technology that could become an option.