billt wrote:Quite. All the leaks I've ever had have missed the drip tray entirely. The most likely catastrophic failures are likely to be in the supply line (had one of those) and the drip tray isn't going to help.
First plumbed in machine I used the drip tray drain, which was OK, but the drain would get clogged with grinds after some time and it was a pain to unclog it because the drain line wasn't very accessible. The second machine I only plumbed in the supply, but changed my technique to use a cup to catch flushing water etc. As it was a lever machine and I used a cup to catch the end of the pull anyway, it wasn't that much of a change.
I'm not going to plumb in te current machine at all.
No, you don't need to have a drain on the drip tray, but if it's convenient there's no reason not to have one.
This is my experience as well. The leaks I've had have been in other parts of the machine. I would consider the risk of a bad leak from the machine similar to other appliances like the washing machine. I manage the risk by Inspecting the machine regularly and replace components like fittings and hoses when needed or ahead of time if possible.