There are walls that seem to be stretched forever but I haven't implemented room that splits into a million pieces. If you remember when that happened and could get a log for that run and send me, I would investigate and find the cause of the bug.
I am not planning on keeping older ways of generating levels. This would turn into a maintenance nightmare. Having generation that works for any size of play area still requires lots of testing - and even tested a lot, I get reports about problems for cases I have never run into. These are fixed as soon as I get them :)