Besides mom complaining on-and-off about less production (well the tree IS much smaller compared to before), I am really happy with what I have after nearly 6 years. Thanks to everyone's great tips and my friend's generosity with scions.
This year reed had less production, poor tree probably tried to distribute energy.
Jan Boyce on the other hand is fully loaded and cracked much less.
Sharwill has exactly one fruit, not able to keep up with other varieties at all.
I trimmed off Mexicola's large branch and left only a little bit of it, no fruit formed from flowers.
Good news, I finally grafted hass last spring and it shoots for the sky, successfully filling the center void. Let's see if it will flower soon.
I also grafted 2x gem branches but they are really shaded by hass thus barely growing.