I've rebuild part of my Delta the last few evenings and today it had it first print since ~1.5y: The humble pressure advance calibration cube for Klipper; but with PETG [which I couldn't print before, but was all I had left] on a new bed, with new glass surface, on self-designed & resin printed mounts, with higher speed than I previously used (100mm/s)... - with other words, I did expect it to just fail, but it worked reasonably well! Dimensional calibration is next, and I'm waiting for the accelerometer to add resonance compensation.

This was a great decision! Created a USB stick for the RPi4 with Mainsail OS. No display necessary, just connected Ethernet (WiFi did not connect, didn't debug though). The printer setup was really easy, though I had to adjust the template configuration for my hardware modifications (mostly tmc2130). Most actual effort was in reworking parts of the hardware (remove case, solder new build plate, design and test the mounts, fix bad soldering that only caused half the heat plate to heat up [good bless thermal cameras!]). Overall, the UX has increased tremendously since I first heard about Klipper (IIRC Kevin just added delta support back then). I think the Mainsail UI has a huge impact on UX. Especially manual calibration of the delta kinematics with the Mainsail web UI is a delight. I scrapped getting piezo probes or stuff like that (for now).