Yayybo

Well its doable but dunno if its worth the hassle to rewrite an existing product just for the sake of not using the profile editor :D Still i guess you could tweak the movement, approaching vendors/questgivers/trainers/flightmasters more easily with predefined pathes. Like if you are near a vendor that is inside a house swap to a predefined path instead of generating a new one with recast and detour...which gets stucked or hugs the wall like crazy.
Hacked a small example together which is despite the name not very 'advanced' haha... . I've included two quest examples for Valley of Trials. Tested on TBC. Kinda wonky and not 100% working right now :/ Most of the included classes are empty as i've added them cuz i thought those features might be handy or must be included to work properly... . Atleast it was more convenient to write the quest profiles and a lot faster than with the profile editor x)
 
AdvancedQuester.rar

Well its doable but dunno if its worth the hassle to rewrite an existing product just for the sake of not using the profile editor :D Still i guess you could tweak the movement, approaching vendors/questgivers/trainers/flightmasters more easily with predefined pathes. Like if you are near a vendor that is inside a house swap to a predefined path instead of generating a new one with recast and detour...which gets stucked or hugs the wall like crazy.
Hacked a small example together which is despite the name not very 'advanced' haha... . I've included two quest examples for Valley of Trials. Tested on TBC. Kinda wonky and not 100% working right now :/ Most of the included classes are empty as i've added them cuz i thought those features might be handy or must be included to work properly... . Atleast it was more convenient to write the quest profiles and a lot faster than with the profile editor x)
 
AdvancedQuester.rar

I had similiar issues with the pathing where the bot took a working but rather unusual path (followed exactly the outline of a house...). Maybe a solution like @Droidz suggested could work for you aswell. Grab the point which the bot tries to use and overwrite it with a working point. Just add the snippet at the beginning of your profile within a RunCode block.
https://wrobot.eu/forums/topic/2681-snippets-codes-for-quest-profiles/?do=findComment&comment=26713
Else you could try what @Matenia suggested and add a FollowPath step. Sadly this solution won't fit for any problem as you can't interrupt a running step. If you get stuck within a step the approach of @Droidz could work tho. If its a transition like get from A to B FollowPath does its job. If your FollowPath starts at a accessible location the bot can even move to the starting line without any issues. (Tick the "force start at beginning" in the profile editor)

u welcome