New Ziggs feels great
First of all his tower destroying powers are very very good
his W tower destruction threshold increases with rank upto 35% hp threshold
He synergies well with the new items,having athenes and morello in one item really helps ziggs
His ult doesn't incentivise clearing waves as much as old ult but is so deadly during team fights
Overall he feels the same only pushing towards his already clear pushing/structure clearing niche