Also, rounded shaped drain guide plastics instead of the usual square or pointed shapes as usual.
Also the back of the slingshot plastic also serves as a two sided slingshot which bounces the ball backwards and forwards when the ball is rolling thru cause the rounded lane guides have rubbers and also a slingshot style switch.

Only simple but haven't seen this used on both sides this way for ages. Picture below shows how it works.

I agree, they have incorporated some simple & different ideas that keep the boxing ring theme flowing through the game and is very effective.