You don't have the nagging feeling that all these Persona games being developed at once is detrimental to their quality? I'd certainly worry if it were a game series I loved.
Not really, no. They haven't really been making many Persona games as of late. We had 4 in 08, Arena in 2012 (which was mostly a different companies producing), and Golden in 2012. Considering that Persona 5 was announced in 2011, I have high hopes for the series and hope it continues to produce. Although, I don't understand the point of Persona 4 Dance All Night.