Whether hes good in eastenders, i dont know, but its pretty much besides the point. Hes just not doctor who material, imho.
None of this matters anyway since there isnt a chance in hell of him being picked. An actor saying theyd like to play the doctor means almost nothing, and it kind of annoys me how all the news sites and papers report it as "danny dyer leaving eastenders for doctor who???" when he literally just responded to an interviewers question with "yeah, id be up for that".