The flipper elasticity is generally fine for a BMPR table around .5 (sometimes I drop it a bit to .45 or at lowest .4). However, the main problem is that the general contact friction of this table / MOD is at .0023 and is too low. I've stated this key and relatively simply item / adjustment for better implementations of the BMPR (BMPR Lite really) more times than I can count now here in the forums and it just doesn't get absorbed or much attention paid to it, but for BMPR to be best blended with the general table physics, the general table Contact Friction setting should be around 0.0035 (give or take .00025). Anything less and you're going to get more ball wondering than one would want and less weightiness than designed / intended, especially when using with BMPR parameters, as are currently in this table, that are closer to what should be set for a .0035 table with around a 5-5.2 slope. A newer revision of BMPR I'm currently working on uses even higher Contact Friction and if that get's incorrectly used and friction set back down to ranges in the .0015-.0025 area, a table will be extremely off and lose.
The problem about increasing the friction is that some more close attention and effort has to be paid to some other table objects, like rubbers, but primarily flipper strengths (with potentially the flipper dampening routine to help - but not essential) and particularly if the ramp shots remain makeable / strong enough. It's not that tough or time consuming though to add some ramp helpers to assist and can also help the flow of the ball up and down the ramps making it look again like more ball weight / momentum is present and go beyond simply helping the ball make it up and along a ramp shot.