there is new thing added in sieges which is 40 block height limit. aka u can not place blocks higher than 40 blocks from banner Y lvl. this feature is good in some ways but it is absolutely bad in other ways, for example, it is very good to stop gun spammers having huge advantage, and it stops ugly towers randomly in air.

but downsides are alot more powerful, for example, if i am an attacker and the defender has 50 block tall wall only, they just infinetly gun spam, there is nothing that can stop them, even if u gun spam them back, they will just hide behind walls which can be made alot on fort roof, there was one counter to this which was people climbing on their walls, by making block towers. now, i have solution to make towering come back, but at the same time make it alot harder to make so people can't really abuse it for G spam.
1) make it so u can only tower up above 40 blocks from banner if u make 3x3 tower, so u gotta do it 3x3 to top, this takes away alot of time, and needs tiny bit of work. now this will not stop abuse of gun spammers, but they will need to do alot of work to do this skybase.
2) make it so u can only go above 40 blocks using stone, sand, and things that can be used to climb pick. this way, climbing pickaxes will be huge counter to them, but this is kinda light nerf of it, so here is another variant, u could make it so u can go above 40 using just scaffolding, this way it can be took down very easily.

let me know what do u think, main point of this suggestion is to bring back towers so attackers can somehow climb on enemy forts to take down annoying gun spammers