@KennyG9 , I have built and flash current LOS 17.1 and found some issues. I can suggest, that the same problems exist in LOS 18 too:
1) Weak vibration, as it was noticed before. At that, in TWRP vibration much more stronger.
2) I cannot make phone use SIM 2 for internet in two-SIM configuration, regardless of the SIM1 and SIM2 network mode settings. So, only SIM 1 is used for the internet in most cases.
3) Minimal speaker volume is too loud. During the call, everyone around can hear that was told to me.
4) There is a notification LED setting, but there is no LED.
5) I cannot find Always On Display setting. Is it possible to use Always On instead of LED, when notifications come?
Update: If cause two vibration event just at a once, it feeled much more stronger. So, vibration is weak because of too short time when vibrator active. This can be fixed by increasing motor-switch-on period.