The constant booting off from Eureka

[Tridus]

I mean with chain exp increased the train has even more reason to die now. So maybe.

Not really. The level disparity causing loss of XP, lack of level sync, and unrewarding nature of chaining mobs vs the train is still there. Even the chain bonus was only on mob X, rather than on all of them during the chain, so it didn't really matter compared to the huge XP you get from the train.

Chaining mobs is simply unrewarding vs fighting NMs, and that disparity only grows as you gain levels. Subjectively, it's also boring as all hell.