Just keep PK system as it is now, is not so bad.
If ppl will not afraid that they will lose items from PK or they need PK rly many ppl as 10 or more than normal random ppl with not TOP gear will have 0 chance for take any good exp spot or kill anything out of instance.
Only need fix this drops items with PK during macro , thats all.
Btw this macro system is bad at all, ppl can make "legit bot" 24/7 without even check PC or click anything and this is also rly bad.
They should make that you need use atleast some button like every 10-30 minute or their macro stop so ppl check their PC atleast little and this can also fix problem with PK macro.