there is nothing wrong with the bus parking strategy because after all mourinho's main target is to reach the final. but keep in mind that sevilla is not an easy team to beat, especially in the european league, see how they beat juventus in the last semifinal, even though the head to head between roma vs juventus was quite interesting, from the last 3 matches they played, sevilla has not been able to win while Rome has won 2 times. i don't want to speculate further but i think both teams have an equal chance of winning.
Keep in your mind that how good the record that has owned by mourinho in all of his european finals. Mourinho has a very good win rate. Parking bus has always become the most important strategy that owned by mourinho. It has proven that so many times if counter attack has become one of most effiecient strategy right now. When the club was always doing defend and its opponent was forget about its weakness and the club can take the advantage from there. Sevilla was a strong team.
My primary concern if this time mourinho is facing sevilla, morinho is also having very good head to head against sevilla.
In my personal opinion, referring to players, coaches and style of play. I prefer Rome. but not in Jose Mourinho's bus parking formation. ideally, the team is fairly equal for me. even in terms of tactics, Jose Mourinho has experience requirements. apart from that, actually Roma could have played better with the available players against Sevilla in the final match later. if, Mourinho used the same pattern against Leverkusen. I can not protest anything, other than smile. I hope Mourinho uses his usual system without focusing too much on bus parking formations. even though Roma have a winning mentality, Dybala is one of them. and some of the players, not inferior to the Sevilla players.
On the other hand, I didn't see a beautiful game from the Seville team. IMO the only thing they have is hard work with a very aggressive style of play. they are such a tireless team, they play with a high mentality. their aim is, to win. that's why, they were able to go this far. in the final match later, I hope Roma play confidently without having to play defensively. at least, we will be presented with an interesting and exciting match.