GB is an excellent suggestion. Swildons is great, but probably more appreciated by enthusiastic cavers than potentially-reluctant cavers.
The ladder at Swildons is indeed a source of enormous ridiculousness. I've not even been there that many times and I've seen all sorts of silliness. For example, just from personal experience:
a) People doing SRT there when people are waiting. Yes, SRT can be pretty fast, but if people were good at SRT they wouldn't be doing it on the 20ft pitch in Swildons so its inevitably novices taking forever to do it.
b) Hitting a queue of 10 to 15 people, most of whom are novices, taking a long time to get up the pitch with the occasional haul being set up.
c) The 'etiquette' at Swildons is that if there is already a ladder on the pitch (which there often is), you leave your bag there and when the party who rigged the ladder rigs _your_ ladder when they leave. This means that whoever rigs the pitch ends up having to rig someone else's ladder as well which seems unfair.
d) When you go to rig someone else's ladder, you find an inadequate amount of gear to make a safe (or at least a safe easy) rig so you do the best you can e.g. I once had to girth hitch a sling to one bolt, clip the other end to the other bolt and hang the ladder off that same carabiner to make the Y-hang for the lifeline to have enough carabiners left for everything else.
e) Sometimes you rig your ladder intending to leave it in place for some time, but someone derigs it anyway and rigs their own ladder (this isn't that annoying in general, except when badly rigged).
f) When someone else rigs your stuff and does a bad job e.g. the classic Mendips crap ladder rigging of ladder on one bolt (totally fine), lifeline on the other bolt (not ideal).
g) Finding, when you return to the ladder, that the ends of the lifeline haven't been clipped together so you only have one end and the first person up has to do it unlifelined.
h) All sorts of bizarre stupid rigging like the guy I saw who had brought two carabiners and a pulley for the lifeline. Two carabiners so the pulley would be 'properly oriented', but still only on one bolt. Why even use a pulley, and make life more difficult and harder for yourself? Friction is your friend when belaying. (I think the belay was a waist belay, which actually isn't catastrophic if done correctly, but...).
i) Meeting a big group coming down as you are coming up, asking to do one up, one down (slightly faster) and making the mistake of not going first and checking what was happening at the top. Finally getting to the top, and discovering the guy was doing a waist belay - but directly over the edge, while not actually belayed to anything... When I gently pointed this out, he clipped the end of the rope to something. This wouldn't have done much as there was about 5m of slack in the rope...
Some day someone needs to put a fixed ladder (back) on that stupid pitch instead of trashing the calcite (which ladders and cavers are doing) and reducing endless cavers to angry hypothermia while they queue. The way that ladder hangs is an embarrassment to claims that cavers believe in cave conservation.
Rant over
Swildons is still a great cave apart from that 6m drop...