I would advise you to wait until there are furhter infos for the bonis housing will bring in the future, as far as I know there is no info if small houses will have some drawbacks compared to medium or big houses.

To your question: they will probably only reduce the prices for medium houses if it turns out that there are much less fc aquiring one compared to small or big houses (of course this is just a guess on my side) and I would definitly not bet on that.