While I preferred MW2 to MW, I still really liked MW and thought it was better than all others besides MW2. I just got really good at cheesing certain class combos in MW2, which was the only way for me to be good at those games. I’m only OK at FPS games and was able to make use of things like the riot shield for holding points or heartbeat sensor and reload perks for C4 to get good K/D ratios. In MW I got a decent percentage of my kills from Danger Close because I died a lot, and goddamn that was a funny way to kill someone. I also felt MW2 was less sniper-friendly, and I suck both as a sniper and against snipers.
Barely noticed it. The only time most people would use that are on long road trips, which I only take about twice a year (most of my road trips are between 100-200 miles one way, which can be done with filling up at the destination). So if I used L3, it was for 30 minutes while grabbing lunch on the road and getting half the charge “filled.” 99% of my charging was L2 at home or at destinations.