I myself was at London Film and Comic Con yesterday and met and had a chat with Colin Baker, Sylvester McCoy AND Paul McGann.
They all had a talk together too so I went along to that, where they essentially said "We'd be up for doing another "Five(ish) Doctors", and that Colin Baker actually has an idea for one.
They then went on to say that if they were to ever be offered a chance to return to Doctor Who, whether it be playing their respective doctors or even just other characters all together, they'd absolutely love to, and they have massive amounts of respect for all the modern doctors, with both McCoy and Baker singling out Matt Smith in particular who they were really impressed by when they met him in person during the 50th anniversary, McCoy also mentioned how "Looking at Smith you can really believe he is an alien.... in the nicest possible way"


Meanwhile Paul McGann was overjoyed that Capaldi had stepped into the role, and says that if his Doctor could have adventures with any other Doctor, he'd want to be with Capaldi. McCoy then went on to point out that despite Ecclestone's doctor making a point of "Being the northern doctor", both he and Capaldi are Scottish and therefore are the true northern doctors, while McGann and Baker are also supposedly more northern than Ecclestone, so they all thought "the northern shtick" Ecclestone had was a bit naff, whilst also being very jealous that Ecclestone managed to be assigned the leather jacket, which both Baker and McGann had been begging for their respective Doctors decades prior
EDIT: Forgot to mention that McGann, McCoy and Baker jokingly made a play to be the new trio of presenters of Top Gear, which obviously would have been like the holy grail in comparison to what we have now
