Well, in all honesty, GBS, they'd been making up the numbers for several seasons, just like Kawasaki who pulled out of MotoGP before them. If they have developed a bike that is obviously going to be competitive, under race development, then I'd welcome them back, because nothing does more for a motorcycle manufacturer than being at the top of the highest profile sport. I know MotoGP [or Motorcycle Grand Prix] isn't hugely big in the UK, but in Europe and other parts of the World, it vies with F1 for prominance, so Suzuki can do themselves a big favour if they can make a competitive bike, and it can only be good for the Championship if they can.
Incidentally, I once asked a question on TSW [around 2008-09] on who was the highest paid competitor in motorsport. I got confident replies of Alonso, Hamilton, etc... and people were surprised to find out it was Valentino Rossi. Some even said Valentino Who..? That would only happen in Britain. In Europe his profile was absolutely massive, and of course, still is, even though I think he hasn't won a race since Sepang in 2010. I'm sure you don't need to ask why I have a 46 at the bottom of my posts.