Unless the arena gets very flipper unfriendly, Flippers will keep their part in the UK/EU scene.
Our rules are a tad more benifical with the allowance of CO2.

The really high power Feather flippers use about 6 kg of weight on the weapon, and have more weaponpower than the old guard. The ones that started the OOTA war. Chaos II, Firestorm, Bigger Brother and so on. So the bulldozer brick can have a nasty sting.

Also, Battery tech has improved a lot. Where TAN and Gravity III used 8 kg of SLA, simular machines can do the task with 2 kg of LiFePo4