Assaults in early floors was perfectly possible already, since it really doesn't require that much alert to get them called down on you, but this could also be a factor of whether or not you destroy explosive machines as well, since those also indirectly fall under the umbrella of the changes.
I used launchers a fair bit in my latest stream (and blew up lots of machines) and ended up getting into high-sec, which I've never done before...
I was going to leave launchers as they were, but during Beta 3 zxc emphasized the lack of consistency with the effect of other non-AOE weapons destroying terrain.
Because I think it's probably a bit excessive now, rather than tweaking explosive results in particular, I could simply lower the overall value of wall/door destruction with regards to alert. This would maintain consistency and reduce alert spiking, while technically reducing the consequences of non-explosive wall destruction even further than what it was before.