Hy together, I am new here. First I have to thank for such a great "The Wasteland mod". My children and I find it amazing. Please forgive me if I ask if it is possible than you can make a version without the Skillbooks and the Skillversion. We love the mod very much but preffer the free of the Vanilla Skill system and we love your Weapons like the Laser guns, too. Is it possible to make a version without the new Skilltrees? Best regards. K.S.
The SPIFSAL attributes and books are integrated into The Wasteland to make the attributes system act in a manner that closely resembles the SPECIAL system of Fallouts 3, New Vegas, and 4. The SPIFSAL attributes are very tightly worked into the perks and buffs associated with Fallout related weapons, the Power Armor, and everything else.
Basically, what you are asking for, is for bdubyah to completely re-write The Wasteland to where it was with A19. It
might be possible to just use the blocks, items, and loot, but crafting the weapons (and pretty much anything else Fallout themed) without the Attributes and Perks to enable the crafting skills will become impossible. The only way to learn how to craft those items would be to get the schematics for them.
If you want to roll back to 7DtD A19, you can still download The Wasteland versions 2.3 or 2.4 from Nexus Mods.
https://www.nexusmods.com/7daystodie/mods/1043
But the older versions compatible with A20 will still have the SPIFSAL system, and will be needed to use the tiles, blocks, and parts that A20 added or changed in the update from A19.
Edit to add: The A19 versions, 2.3 & 2.4, will probably work for the items like the Nuka-Colas, and the weapons, maybe the power armor too. But the NPCs, prefabs, and other things that are in 2.75 or 2.98 may cause serious problems because of the differences made in A20 .