It seems like you just changed the tires in every vehicle.......If you can allaborate in details......why did you changed them and what it will affect on their performance. then somebody can give comments....otherwise its wild guess.....and seems like just drawing is changed in pictures.
Thank you for your interaction brother
for the BTR-80 & BTR-50, if the engine moved to the front i think that will be good for three reasons:
1. Will provide more space in the back of the crew
2. It will be easy for the crew to enter and exit through wide door in the rear
3. Entry and exit from the vehicle from behind provides greater protection for the crew
for the BMP-2 I think:
1. the roof must raise to provide greater convenience for the crew
2. Change the two doors in the back to become one large door to facilitate the entry and exit
3. Increasing the length, height, width, Weight of the vehicle with the addition of further Shields and new Engine would make this IFV equal to western modern IFV's like german Puma, British Warrior, American Bradley, Austrian Ascod, Swedish CV9040
for the AMX-10P i think it should be APC not IFV because of its modest arm (20mm)
for AMX-10RC its anti-tank turret should be raised from 105mm to 120mm , Coparable to the Italian Centauro