You're not wrong there. The Streetlite Maxes really were a white elephant in my opinion. Displaced at first from the X39 due it being deckerised, then falling out of favour at Westbury following the Discover relaunch, then lasting only a year on the Bath 4 (which they were too long for, to be honest), before finally seeing their days at WoE out working out of LH. Even then, they were among the first to go in post-Christmas cascades. A route like the 126 is a good home for them, as they are slightly shorter and than a B7RLE, which would really help through Axbridge, for example. Yet at the same time they have a similar capacity. Didn't Bath depot play host to a few more than the native batch of 63068-78 at some stage? I'm sure some ex-Manchester ones spring to mind (something like 63099/100?).
Never knew either that the X2 has a length restriction on it! What is that due to?