The good news for Democrats is that Illinois will be a Democratic and not Republican gerrymander this cycle. That said, since we have seen some solid 13-5 Democratic maps the question is raised; how many districts could Republican draw themselves if they had control of redistricting?
I project this map to something in the order of 9-9, at least in neutral years. Due to Obama's unbalancing influence on PVI in Illinois I'm not really certain how safe/unsafe certain districts are.
One crucial decision for redistricting Illinois is deciding how many VRA districts to draw. It could be argued Chicago only has the minority population for two Black majority districts and one Hispanic majority district. However it has been repeatedly demonstrated that it is possible to maintain the existing three Black majority districts (at greatly reduced minority population and compactness) and create a new Hispanic majority district. I have also chosen to produce all five VRA districts, though the northernmost Hispanic district was undoubtedly a liability for my goals.
All populations are for voting age, total minority population is invariably a few percentage points higher.
CD1 (Blue): 90/10 O/M 32/52/11 W/B/H
CD2 (Green): 85/13 O/M 35/51/10 W/B/H
CD3 (Dark Magenta): 90/9 O/M 34/51/9 W/B/H
CD4 (Red): 76/23 O/M 30/7/58 W/B/H
CD5 (Gold): 77/22 O/M 36/5/52 W/B/H
CD6 (Teal): 73/26 O/M
CD7 (Dark Gray): 66/32 O/M
CD8 (Slate Blue): 62/37 O/M
CD9 (Cyan) 49.2/49.5 O/M
CD10 (Deep Pink) 51.9/47.0 O/M
CD11 (Chartreuse) 50.6/48.1 O/M
CD12 (Cornflower Blue) 50.2/48.3 O/M
CD13 (Dark Salmon) 68/31 O/M
CD14 (Olive) 48.8/49.5 O/M
CD15 (Dark Orange) 49.6/48.7 O/M
CD16 (Lime) 50.2/48.2 O/M
CD17 (Dark Slate Blue) 45.4/52.8 O/M
CD18 (Yellow) 47.0/51.2 O/M