As someone who's going for 200m farming, this would help a lot in the long run, being able to use the Lizardman fang on Xeric's Talisman and have working teleports would make the Zeah farming patch viable in farm runs, and the calquat one too as it gives a decent chunk of XP.
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Fully working Xeric's talisman, using fangs so you can teleport around Zeah with it.
Fully working Calquat tree patch, also with a teleport, or possibly fix the Brimhaven crevice(picture 2).
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Here's one example of how useful the Xeric's Glade teleport option is.
Brimhaven crevice[Does not work]