Can't help thinking there is something 'employment law' related about this re-appointment. If he was replaced for medical reasons originally, is he not reclaiming his original contract if he is now fit for work?
I can't believe the producers would bring back someone who clearly polarised opinion when he was originally presenting. There has to be something more to it. You say you're responding to the core viewers? I have watched Gardeners World for 20 years and find Monty the least enjoyable presenter of all. Clearly, i'm not the core then?
This appears to be the last death throws of GW. You don't go forward by going back to something which was unconvincing previously.