When talking about lag, you can always just create full TWIG bases with the lowest decay in the game and make it two grids big
(i think previously twig decayed after like 8 hours when i first joined a year orso ago for that reason)
But on a more serieus note though, the decay should probaly be none and if you would add decay make it 25% max, If you want to build something cool you end up spending the first time of your limited play time farming for an hour or two to get the resources for upkeep.
The reason you play Pure is to enjoy, otherwise there are other servers that give you the decay experience, the non-decay is what makes this server set unique and i believe that is what retains the relatively high PVE vanilla player counts.