There was no real tangible difference that happened when trans Jupiter was on my Libra/Aries midpoint tbh. At least none worthy to store in an archive.But perhaps a slower,more "thorough" transit like Sat/Ura/Nep & Plu would be more noticeable? Even Jupiter in retro motion?
The Uranus/Pluto transit to the Midpoint was certainly more potent during that time.
Jupiter on Midheaven is nice though. It can suggest that there is increased confidence to look past any criticism or negativity that may come from haters of your show.
This optimistic attitude will serve you well as it means that you will not be down on yourself if people do not "agree" with your creative spirit. Your whole outlook will be more philosophical and detached.
The other outcome would be that the timing is awesome and options open up. Suddenly a whole new world is out there and you can't go back to the same place you were before.
Is it because you feel more appreciative? Perhaps. Is it confidence? Maybe. But there is a renewed spirit that warrants more risk-taking and internal expansion.
One thing about Jupiter is that it tends to blind one of any fears. Well atleast until the transit is over.
So you risk more because you expect more. You expand more and thus your world does look "bigger" than before. If only for a while.
You may feel like the "smalltime champ" becomes a "world renowned warrior". And with supportive steady aspects from Pluto, the momentum can last for a very long time indeed.