Thanks for responding.
The fact is that this is a horrible matchmaking experience. The "skill rating" needs tweaked to make sense so that "skills" can be used to win somewhat balanced matches. 8M GP vs a 1.5M GP simply is not really a match. Either the 8M autos the match, or they don't participate at all. So, there isn't really skill being used by either party.
If life gets in the way, don't join the arena because you won't be able to do your matches which are manually performed. If you don't play (or even auto), you should be setback from playing the next time. Or even better, move non-participating players out of the standard levels and create their own. After 3 arenas of playing in the non-competitive, they can move back into the competitive play. I am just brainstorming here, but this would solve this issue quickly and improve the playability of grand arena. I would estimate that over half of the players in the lower tiers would be gone. People that have high GPs being forced to play would move up in the arena and play against more equitable opponents. People with lower GPs would battle against similar lower GPs and there would be far fewer lopsided matches.
I'd be curious to see stats on GP difference between opponents by tier. The last 3 GAs that I have participated in, I was at the at or near the bottom GP of all participates. I won 1 GA. That was due to no one participating. The other two, I was steamrolled in all 3 matches by opponents with at least 3x my GP, close to 4-5 in some cases. Either way, none of those arenas were fun to play nor skill based.
It's okay to critique what I wrote and propose better ideas, but don't sit there and claim that matchmaking isn't broken or that it is fun to "play" lopsided matches, or that it's okay that players sign up but don't participate, etc. I am trying to propose realistic solutions to a significant problem with arena.