Conversation so far:
What were some significant line up changes?
Immediately following the tour, Helloween parted ways with guitarist Roland Grapow and drummer Uli Kusch.
Who were they replaced with?
guitarist Sascha Gerstner (ex-Freedom Call, Neumond) and drummer Mark Cross (ex-Metalium, Kingdom Come, At Vance, Firewind).
Was there tension between the members of the band?
Weikath, Deris, and Grosskopf felt that Kusch and Grapow, in particular, were spending more time on and paying more attention to their new side-project, Masterplan.

Question: Did any other band member leave during this time?
Self-contained rewrite: Besides Kusch and Grapow  did any other Helloween band member leave during 2002-2004?