As a total beginner to LMB kits, I'm very impressed with the kit and the clear care that's been taken in creating the detailed instructions.
A really effective and appropriate addition to this Friends set which has 'lights' which were begging to really be lit!
The flickering lamp is particularly impressive and fun.
The only tiny criticism is the front doors can't be opened any more due to the thickness of the inside strip light.
However, the very nature of fitting out your build with delicate wiring and so on obviously means playability is automatically somewhat affected.
In saying that, that's really the only impact on the functions of the existing set I've noticed.