  We present the second in a series of studies into the forward tracking system
for a future linear $ e^+ e^- $ collider with a center-of-mass energy in the
range from 250 GeV to 3 TeV. In this note a number of specific challenges are
investigated, that have caused a degradation of the tracking and vertexing
performance in the forward region in previous experiments. We perform a
quantitative analysis of the dependence of the tracking performance on detector
design parameters and identify several ways to mitigate the performance loss
for charged particles emitted at shallow angle.
