Wow! I'm not crazy after all! Seriously though, I had always thought that the reason they seemed bigger to me was because they were brighter and easier to see (I had reported on them appearing to be brighter/easier to see right after my first experience with 1.30), but, based on the comparison you did, it's actually the other way around...they appear to be brighter and easier to see because they are bigger! Thanks for the comparison...you're shedding some new light on all this!
Very curious to hear what Paul Tweedle has to say about this...
Also, I got around to trying out spectator mode again last night, to see if it had been improved/fixed with 1.40, but nope...it's still completely useless. Either they need to make it work as it should (i.e. watching someone race in spectator mode should be just like watching yourself race) or just go ahead and remove it.