And again you are wrong, yes you can download a cannon from yt(when i said that i meant schematica of certain cannon which you put in the schematica folder). No, i am not a kid, i just get annoyed by people like you which think they are smartest when they clearly arent. Like, ok, regens walls are useful but they are waste of time, instead of wasting your time on regen walls you can add many different kind of walls which would defend the base better than 1 set of regens. It wasnt who requested that it gets removed, it was players themselves who requested lava to be scatterable becouse they saw it on premium servers(good servers) and in general if pika wants to get closer to them(what players actually want, good cracked server with decent factions) they are following certain stuff which they do. In general regen walls are easy to go trough, you can just get a cannon with regen buster on it and boom you are trough, but yes it is true that majority of pika community cant even use a simple cannon so yes that would probably secure you from 80% of raiding attempts done by randies.
In the time you would make 1 regen set(lets say your base is 5x5chunks or bigger, going from bedrock to sky level) you could easily gen in the whole buffer of 20 chunks(each side of the base + wraps), and please tell me then what is better? 1 set of regens or maxed out buffer which can fit up to ±150 walls.
In my opinion regens are waste of time, especially if you have a base bigger than 2x2chunks.