With the new format, it will indeed be very possible if the EPL team does that it's just that for now I see is what if in the end there are new format rules when adding Champions League slots but this season Liverpool who are in competition in the EPL for the championship race (systematically in the top 4) and they become champions in the Europa Legaue because they are now competing in the quarter-finals and the big chance of winning is still very much there for now.
When the automatic slot for the Europa League champion (if Liverpool wins) whether there will indeed be additions from other clubs or not because in the end we can see it even become 6 slots if the new rules are 5 EPL clusters in the Champions League as well as the Europa League champion who is automatically included in the Champions League the following season.
Is this also possible or are only 5 slots still used?
Because if it is only 5 slots, I think all leagues are still possible, especially for last season we saw in La Liga who got 5 slots and the previous 2 seasons there were clubs from the Bundesliga who got it.
What happens if Liverpool wins europa, which is direct UCL, but also they are in top four as we know, so they are going to UCL anyway. I am not entirely sure if that spot goes away, like they just get one, or does that mean fifth of Premier league goes to UCL? Not really well versed in that regards.
In any case, there is no guarantee that Liverpool would win europa, there is a possibility that they could lose along the way. Yes they are the better team, but check the past five years and quarter finals till finals, you will see many good teams end up losing to unexpected teams (mostly to sevilla lol) so you will realize that Liverpool may not end up winning at all. That means nothing will change with the situation.