Winning matches in the qualifying rounds means nothing in terms of points for coefficients. Last year rovers got 2.5 points for getting to the group stages. To improve the 2.5 points from there you actually have to get more points for wins /draws (in the group stages) starting from zero. If you win 2 and lose all others you finish on 2 points from counting wins but revert back to 2.5 points as that is higher.
It makes it tough to get a coefficient higher the 12.5 over 5 years as you have to make groups and also probably qualify from the group to get 3 or 3.5 points in any year....Big ask