I understand that you want to increase accessibility to soulbearer, but I don't understand your logic.
Your logic -> can't compare soulbearer to similarly priced items in the pkp shop -> why? -> "[soulbearer] is an unused item in the game"
Arguing that soulbearer is an unused item is completely opinion. I'd argue I use mine a lot, especially when hunting easy clues.
My logic -> you should compare soulbearer to similarly priced items in the shop -> why? -> currently the pkp shop is the only way to get it -> opportunity cost of buying the soulbearer
This is an objective comparison. If you dont like the zenyte comparison because they are not available in your ironman pkp shop, then you could just use an equivalent quantity of blood runes. Either way, I would not want soulbearer in the loyalty shop.
So, here's what I think
Really, what you're saying is... you also think the soulbearer is overpriced in the pkp shop -> which is completely okay to think -> just come out and say it though... don't beat around the bush and pretend it's a simple suggestion
You might not think the item is worth 9,750 pkp , but to anyone that currently owns one, it most definitely is.