A couple of "ifs" in here, but I expect it to break down like this:
IF it follows the same format as last year, then teams will be split into 2 pools of 12, with the winners and runners up from each league playing the 7th and 8th placed teams from each of the other 2 leagues home and away, and losing semi finalists playing 5th and 6th place.
Pro 14 already done and dusted, with Leinster and Munster the finalists, so we would get one or other of them.
Top 14 at semi final stage, with Toulouse and La Rochelle having finished 1st and 2nd with home semi finals against Bordeaux and Racing respectively, so IF it goes to form, Wasps will be playing either Toulouse or La Rochelle.
So in that scenario a win against Tiggers would have given us a more favourable draw.
However, EPRC won't be so constrained by a contracted season next year, so may want to ensure 6 pool games for each team, in which case, we may see 6 pools of 4 with a more open draw (but Wasps still bottom seeds) and only the best 2 runners up progressing.