Whole DEC seems a little much, but yes, a visible 0,1 step would be great to prevent that.
Seasonal rent would require a higher starting capital for a player to even consider renting. I think that would be too much to do at once, raising the minimum to 1 DEC is already quite the hike :-D
Both are valid points. My additional steps are more of a wish list and a destination I'd like to get to, but I recognize there are other ways to achieve the same objectives.