Agree with that !This is exactly why the scheme is looking more fragile with every week that passes.
You're just scrapping in on 301, even if you couldn't get to Swansea, you know that this threshold will likely rise for the next away games, so it is within your interest for tickets to OT and other places to buy a Swansea ticket, then pass it on to friend, relative, whatever, otherwise you'll drop out of the top tier too (not saying you will, but as an example).
That said, the vast majority of 300+ point holders do go to most of the games, so you would argue not many will be buying a ticket just to give it up, however you can see that it will happen.
Anything below 242 at the moment, and you're not getting an away ticket from here on in imho. For reasons of banking points for the big games to come, the, Swansea, Stoke, Huddersfield and Burnley aways are going to sell just as well as no one will want to drop out of a tier.