Do you have any notion of how much it costs to install and certify new points, signals and maintenance equipment?Since when does extending a siding for a DMU require points? They don't require a run around so unless there is insufficient space to extend the siding away from the junction necessitating moving the points then you don't need new points, signals etc
Are you even remotely familiar with the concept of opportunity cost - the infinite wants of keyboard gunzels versus the finite pockets of taxpayers?
And even if that were the case you don't need to buy new so the costs would be reduced by simply moving the old
If $$$ can then be saved not buying extra driver motors which sit unused in the middle of a 2 x 3VL or even a 3 x 3VL set then that potential saving needs to be offset against any additional costs before any judgement can be made