Vinny back as manager would be an exciting dream ... but ... the evidence is that welcoming back the prodigal son often ends badly (Solskjaer & Lampard the latest, perhaps) as there's too much emotion involved, too many past relationships behind the scenes, and then everyone feels bad sacking a club legend.
I don't think so, the evidence shows Ancelotti, Guardiola, Enrique and Zidane returning did wonders for their respective teams, in just over last 20 years that is and I could name plenty more from the past, even more if you look at people who just offered stability short or long term. You can even argue Chelsea only won their first UCL because a prodigal son returned giving short term stability.
It gets overemphasised every failure of a former club favourite in the press on these shores but for every failure there's also a success story, you're more likely to have sustained or even short term success/stability with a former player, the problem lies within the judgement of clubs hiring and both Solksjaer with rags or Lampard were just terrible appointments, one had already massively flopped with no right to manage a Prem team again the other still hasn't proven anything, he was a very inexperienced young manager Lampard who needed more time to prove himself at Derby while learning on the job, he didn't set the world alight and only helped Derby achieve the same position as the year before, he wasn't that impressive despite strengthening their squad massively with Chelsea loanees he didn't do owt at great Derby, he's looking like a total dunce at Everton too his tactics are bad he has no backup plan and he uses excuses.
Kompany even at Anderlecht helping the club recover from what looked a certain demise, he proved more in just that role than Lampard ever has managerially it showed a certain mettle, that's despite our press trying to rip him to shreds for his early Anderlecht start which was fully expected in Belgium, he's also shown much more than Lampard by completely changing Burnley's philosophy from top to bottom.
I'm not even saying Vinny is the answer but he's already at a very good level of progression in his early career, if he can carry on in his Prem trajectory and consolidate Burnley too until Pep leaves he'll prove he's no novice, by that time if he achieves all this he'll rightly be amongst the obvious frontrunners to take over from Pep whether or not he gets the job.