still BMP-3 time slowly but surely passing... I hope Manul will soon take over
The Manul is a BMP-3MM... if you think of the BMP-1 and BMP-2 and BMP-3 as tanks then BMP-1 and BMP-2 and BMP-3 are T-72 upgrades and T-80 and T-90 and Manul is T-90AM, and they might upgrade their entire existing fleet to this level over time, but they are not going to cancel T-14 just because it is so far in advance of anything the west has had planned to make.
Kurganets and Boomerang are vehicle families and no upgraded BMP-3 modification can replace them, but for the moment the Manul is good enough and better than anything they have faced from the west so far in this conflict, but eventually the Kurganets will be better.
Aso fo rKurganets-25 and Manmul i don't think they will be made concurrently.
I rather suspect they might upgrade existing BMP-3s to Manul standard during overhauls in the same way that they will upgrade T-72s in stock to the latest upgrade standard for the T-72s... a standard that is changing all the time with new improvements too.
The turret mounted on Manul is the new standard turret most new vehicles will carry from Armata to Kurganets and Boomerang to Typhoon and the DT-30 arctic vehicles.
The goal is to get rid of all the old BMP 1 and BMP 2 and BMP 3 type vehicles that all have different wheels and tracks and engines and transmissions that are not interchangeable to have five vehicle families.
A tank or motor rifle division might have BMP-3 troop transports, but the EW and other types of vehicles in that armoured division will include BMP-1 and BMP-2 type vehicles... it will also have different tank models... the artillery vehicle might be MSTA on a T-80 tank chassis while the tank might be a T-90, and the armour engineer recovery vehicle might be based on a T-72. There will likely be a half dozen different vehicles within that division based on the MTLB family of vehicles from the Shturm-S ATGM vehicle to the ACRV-2 command vehicle and the MTLBu artillery tractor etc etc... each potentially with different engines and transmissions meaning there is no advantage to having vehicle families in the first place.
The idea is that eventually a division will be allocated a vehicle type based on mobility and where it will fight and who it will be fighting, so an armoured division fighting in the steppe or arctic or desert on soft ground might be DT-30 based because you need tracks but a lighter vehicle will cope better with the lack of roads and deep snow and mud, while a force for operating in places with better road systems might be equipped with Boomerang based vehicles or Typhoon based vehicles where the roads allow high speed mobility, but fighting in urban areas might require Armata level protected vehicles etc etc.
The point is that in a division where every vehicle is going to be based on one type of chassis one engine, one wheel/track, one transmission where everything is standardised means your logistics train is going to be rather shorter than a unit with a wide varieties of vehicles whose parts are not compatible.
I rather doubt they will wait till they have all the necessary vehicle variations before they start introducing these vehicles so for a division that is going to be a medium tracked division then they might introduce Kurganets based BMPs and BTRs first... eventually we will see a Kurganets with a T-14 turret that will replace the T-90s and T-72s, and eventually you will see all the vehicles in a division replaced by family vehicles.
In the current situation it just makes sense to fit the 30mm cannon turret of BTR-82As to BMP-1s and use them as troop transports with add on armour and other bits and pieces.
It is not about throwing away lives, they are rather careful about preserving lives... and that has more to do with how you use them.
Rolling over an anti tank mine is going to screw up any vehicle, but the new vehicles are designed to maximising the chances of crew and troops surviving.
Keep in mind that they have several projects to robotise vehicles of all types so in some cases they could simply use their oldest vehicles as demolition vehicles to drive remotely into an enemy position to destroy it.
If such a vehicle is destroyed then you are making the enemy use up their anti vehicle weapons to do so and I would add that while remote controlled some hits from anti armour vehicles that might injure the crew and stop the vehicle might not stop a robot vehicle if it does not disable it. An ATGM hit that would decapitate the driver in a manned vehicle might not stop a robot vehicle if there is nothing in line with the drivers head that was important to drive the vehicle.
Equally a BTR-60 might roll over several mines taking out wheels, but clever modification with a frame that has extra tiny wheels so the vehicle can continue moving after the front four wheels are taken out could lead to it reaching enemy positions before being detonated inside the enemy position.
Some sort of belly wheel arrangement might allow the vehicle to continue moving with the front four wheels destroyed simply by turning around and reversing towards the enemy position with hidden belly wheels supporting the front end of the vehicle and the rear wheels drag it to the enemy lines.