Whenever it returns, Arrow has the opportunity to keep Slade on as a supporting character, which I would LOVE! Oliver already hinted at the idea of them tracking down Slade's son. So why not have them work on that together. As we saw in that finale, the pair make quite a team! Especially now that Slade has gotten over the effects of the Mira Kuru in his system. Team Arrow could do with another badass! Because let's face it, Mr Terrific just isn't cutting it...

Even if he is only in the next season briefly, CW should consider giving him a spin-off series. Perhaps Slade wants to find his son on his own? And along the way he uses his mercenary abilities to make money. Give him some cool missions along the way and you've got an awesome Deathstroke TV series. There are many, many comics to choose from!

Failing that, I would be cool with an animated series, like with Vixen! I would prefer live action Deathstroke but I know Manu Bennett is a big part of another show, The Shannara Chronicles and so shooting schedules may not work out.