I’m definitely planning to build an E2L one day but it takes a 17mm driver and for my next build I’m planning to use this 20mm driver from Kaidomain. I think an S2 or S2+ with a kiriba-ru spacer might be a better option as I could solder the driver to the pill.
Currently I’m planning to attempt the build with a Convoy S12 host and try to cut the traces on the MCPCB so I can connect the LEDs individually, but I’m still interested in alternative hosts.