Guild Wars 2

Mesmer have an entire trait line and a number of skills and utilities dedicated to interruption, and they are likely to be buffed in the next patch.

But interruption will remain a dead art as long as we have no way of telling what the other guy is casting.

GW2 features telegraphs and relatively unique skill visuals, which was a nice idea to save cluttering the screen and instead you learn to recognise the tells; however in practice the lense flares and visual effects of battle often hide even the largest and most obvious telegraphs (ie. entire hazard markers, ettin smashes etc). Not to mention how different races tell differently, and some races like Asura are much harder to recognise the tells on than others (ie norn) at a distance.

If interruption to to become a viable feature in the game we need to bring back GW1’s casting bars, where skills and cast times of your opponent appeared under their health bar so you can decide which skill to interuppt and when. Until then interupts will remain a gimmick in PvP and PvE alike.