Not without moving the code for the build suggestion pop-up from dll to python like I suggested to bill when he reworked it recently and asked some similar questions.
He was intent on reworking it himself though, probably wanted to get more familiar with UI stuff which is a good thing all in all, which is partly why I didn't insist.
Secondary reason was that I had little time for modding at the time he looked into improving that pop-up.
In other words, I have no idea on how to widen the vanilla tooltip which is currently used there.