This forum is for Retail, so youwill likely get fewer responses than you would in the Wrath forum here https://eu.forums.blizzard.com/en/wow/c/wow-classic/wrath-of-the-lich-king-classic-discussion/288
There’s a thread about it Rested XP addon
Personally, I play Wrath with almost no addons, because I prefer bumbling through as near as I can get to being new all over again, so I haven’t used Questie or RestedXP.
I can tell you that TomTom does not provide routes for quest sequences. It just provides map co-ordinates. This is very useful when you see a Wowhead comment saying the gadget is at 23.73 18.45 - you can tell TomTom /way 23.73 18.45 and see where it is on the map. But it doesn’t suggest where to go next.
It is against Blizzard’s ToS for an addon to charge.
1) Add-ons must be free of charge.
All add-ons must be distributed free of charge. Developers may not create “premium” versions of add-ons with additional for-pay features, charge money to download an add-on, charge for services related to the add-on, or otherwise require some form of monetary compensation to download or access an add-on.
But some people may try to get away with it through a lawyerly interpretation of the wording.
I started down the rabbit-hole of trying to figure out what’s going on with it, but gave up.
But here’s the thing: Classic Wrath is already very light on resources compared to the bloated Dragonflight. Do you really need to find something lighter than Questie? Has it been giving you problems? The Questie Issue pages are here https://github.com/Questie/Questie/issues and I don’t see anything baout it.