Just to add my 2, reasonably well informed pence. The M1A2 SEPv3 is still lighter than the CR2, especially with the weight gain from LEP (more pronounced difference when they are both in a "TES" spec). They also use a marginally larger track, so they have lower ground pressure. This makes the terrain accessability of the M1 better than the CR2 and the CR2 is only getting worse at the moment.
Whilst we were hugely ahead of the US Army wrt the APU and that has helped with the overall fuel consumption, especially during silent watch, the turbine is on par or slightly better when actually running at combat speed (peak turbine efficiency). the CV12 is an extremely old thirsty beast, the proposed Europack would have been a massive improvement, so much so that they could have removed the external fuel tanks. Plus the turbine gives it 1500hp, lower transmission losses and a significantly higher top speed, road or cross country. Torsion bars whilst giving a poorer ride, require less maintenance and are not affected by environment or usage. Whereas the hydrogas is susceptible to overheating and mis-management/maintenance but it does give a more "plush" ride in comparison
The bag charges full protection relies on the charges being stored correctly with the caps in place, and regardless the warheads are exposed, personally I would feel better if they were stored akin to the M1 in a nice armoured, blow out box. Plus then we could use NATO standardised ammunition with the longer APFSDS ammunition, STAFF and MPAT rounds, or even the M1098 canister round. Nothing like a shotgun lethal to 500 m.