Some of the BP's i have require an LTN reader, created by the same guy that did LTN. I really appreciate you bring LTN up to 2.0. Are you contemplating fixing the LTN reader also? I would offer to help but I am unable to build/fix mods. I haven't coded since GWBASIC, which was loooongg ago. :(

do you have a reference to "LTN Reader" Is it this thing: https://mods.factorio.com/mod/LTN_Content_Reader ?

There is this mod: https://mods.factorio.com/mod/LTN_Content_Reader_Updated (which I have not tried) and I will also pitch my LTN combinator: https://mods.factorio.com/mod/ltn-train-info

Those should have equivalent functionality but may not be drop-ins for the blueprints. I myself have no plans to migrate other mods. :-)