“Well, I’m afraid that’s not possible, due to the past behavior of one of the band members,” Megadeth guitarist and lead vocalist Dave Mustaine revealed to Eddie Trunk during their conversation on SiriusXM’s Trunk Nation With Eddie Trunk, when asked about the possibility of a full-lineup reunion for Megadeth‘s final show. Mustaine’s response was vague, failing to provide further details about the incident, instead stating (as transcribed by Blabbermouth), “Because, first and foremost, it would be unfair to the other band members if I didn’t perform with them as well. However, our collaboration with Marty [Friedman] in Japan was a no-brainer – it was brilliant. I have a lot of love for Marty. We had our differences, and he went his way, while I went mine. Nevertheless, my relationship with Marty was extremely intense, as it was my first significant collaboration with a guitar player.”
In February 2023, former Megadeth guitarist Marty Friedman reunited with the band in Japan for the first time in 23 years, performing several songs together. Before his departure in 1999, Friedman appeared on five Megadeth studio albums and eventually moved to Japan permanently in 2003.
Mustaine continued, “My working relationship with Chris [Poland] was great, but it didn’t quite match the level of my relationship with Marty. Similarly, my relationship with Jeff [Young] was good, but still not as strong as the one I had with Marty.” 
Megadeth has undergone numerous lineup changes over the years, with Wikipedia dedicating an entire page to the band’s former members. The complexity of the situation, combined with the various reasons for the members’ departures, makes a reunion challenging. Mustaine elaborated, “I probably wouldn’t have any issues performing with members from those lineups, except for the fact that Gar [Samuelson] has passed away, and I wouldn’t want to do anything that might seem unfair to the other band members.”
Mustaine refrained from providing more information about the behavior of the band member that has made a reunion unlikely, instead discussing the possibility of Megadeth‘s final show, “I’m not sure. I jokingly told our management to book some fake tour dates at the end, so I won’t be aware of the actual final show and end up getting emotional on stage.”
Below are the upcoming Megadeth tour dates.
January
17 La Vergne, TN @ Let There Be Shred: Immersive Listening Event
February
15 – Victoria, BC @ Save-On-Foods Memorial Centre
17 – Abbotsford, BC @ Rogers Forum
18 – Kelowna, BC @ Prospera Place
20 – Calgary, AB @ Scotiabank Saddledome
21 – Edmonton, AB @ Rogers Place
24 – Saskatoon, SK @ SaskTel Centre
25 – Winnipeg, MB @ Canada Life Centre
28 – London, ON @ Canada Life Place
March
1 – Ottawa, ON @ Canadian Tire Centre
3 – Halifax, NS @ Scotiabank Centre
4 – Moncton, NB @ Avenir Centre
6 – Québec City, QC @ Videotron Centre
April
23 – Lima, Peru @ Costa 21
26 – Bogotá, Colombia @ Movistar Arena
27 – Bogotá, Colombia @ Movistar Arena
30 – Buenos Aires, Argentina @ TBD
May
2 – São Paulo, Brazil @ Espaco Unimed
4 – Santiago, Chile @ Movistar Arena
5 – Santiago, Chile @ Movistar Arena
8 – Monterrey, Mexico @ Arena Monterrey
10 – Mexico City, Mexico @ Arena Ciudad de Mexico
11 – Mexico City, Mexico @ Arena Ciudad de Mexico
13 – Guadalajara, Mexico @ Arena Guadalajara
June
2 – Hanover, Germany @ Heinz von Heiden Arena
6 – Maastricht, Netherlands @ South of Heaven
7 – Gelsenkirchen, Germany @ Amphitheater
10 – Hradec Králové, Czechia @ Rock For People – Park 360
11 – Luxembourg, LUX @ Rockhal
14 Ferrara, Italy @ Ferrara Summer Festival – Piazza Ariostea
15 Zurich, SWI @ Halle 622
16 Vienna, AUT @ Gasometer
6/23 – Istanbul, TUR @ KüçükÇiftlik Park
6/26 – Helsinki, Finland @ Suvilahti – TUSKA
6/28 – Almaty, KAZ @ Spartak Stadium
6/7 – Gelsenkirchen, GER @ Amphitheater
August
8/29 – Toronto, ON Scotiabank Arena
8/30 – Toronto, ON Scotiabank Arena
September
3 – Montreal, QC @ Parc Jean Drapeau
5 – Harrison, NJ @ Sports Illustrated Stadium
6 – Harrison, NJ @ Sports Illustrated Stadium
9 – Boston, MA @ TD Garden
11 – Bristow, VA @ Jiffy Lube Live
12 – Charlotte, NC @ PNC Music Pavilion
15 – Hershey, PA @ Hersheypark Stadium
19 – Shakopee, MN @ Mystic Lake Amphitheater
22 – Tinley Park, IL @ Credit Union 1 Amphitheatre
25 – Los Angeles, CA @ BMO Stadium
26 – Los Angeles, CA @ BMO Stadium
29 – San Antonio, TX @ Alamodome
