Another way to look at a Jupiter Return
First, Jupiter is slow moving compared to the Sun, Moon, inner planets --- it is likely that a Return chart's Ascendant would be a bit "iffy" in most cases.
Second, Jupiter doesn't typically show up as an instigating influence but more as a support or situational influence. Jupiter works better when combined with other planets or chart angles.
Third, if you view Jupiter as a cyclic body within the framework of your natal chart, you will watch it move through the houses of your chart a year at a time. These general focus points or sections of the chart will represent a theme for Jupiter to work within. In the context of Jupiter's current house and natal house, look for conjunctions and oppositions, maybe also squares, to Jupiter to see what situations arise that you can choose to take advantage of. Once you do something, Jupiter will often be seen as supporting and enhancing that action.
If success in some endeavor is wanted, look for combinations of Jupiter, Pluto and the MC in any form of charting. Good luck. Dave