TK used to say that if you could fly a Seneca 1, you could fly anything!
Not sure about flying anything, but after a few circuits you would probably develop some nice arm toning and strength. I have a few Seneca hours, from the 1 through to the V, all of them except the 1 are not bad machines, the V being a bit of a spaceship compared the 1. The trick with all the Seneca and most Pipers is to place something heavy down the back if you have only one or two up front. The fact they have a main wheel for a nose wheel gives some suggestion Piper gave up on fixing it's issues.
There are/were a few Seneca 1s converted to spoilers for roll control. I heard this fixed a lot of the mush issues especially at low speed due to the 1 having trim tabs for ailerons. Never got to try one though.