In my experience Placelord you have to sit out penalty with game opened. You know, for reasons..

This is indeed true. Since the guild update I was finally able to invite and  play with friends from both France and Australia! Before the update it was not possible for me to do so seeing as how I am on the NA server and they are not.

Queing for matches can be anywhere between 15 seconds to 5 or 10 minutes  based on how many maps you Q for. The more maps you select the faster you will find a game.
Your mmr is the level of difficulty the missions will be. It is averaged among all four players. Starting out your mmr will be low (20's probably) and by winning missions it increases, losing decreases. Above 50mmr is widely considered high mmr so enemies in missions starting at 50mmr feel a bit more bullet spongey and there are more of them.
 Being carried is just something that will happen at times and its best not to worry too much about it. This games matchmaking has a tendency to throw level 1s in with 3 300+ lv players often enough and a level 1 just wont be effective. Use that time to feel out the combat and level and observe your allies while trying not to die every 15 seconds because the team shares lives
   Welcome to Spacelords!

@Arnold, love the El Dorado clip! My vote if we have only one for right now would be Aneska!

Thankyou for addressing that, good to know it wasnt intended.

Level500+ Player here, I agree with every point you've made. What is considered a Mentor match especially needs to be redefined. It should ATLEAST be lv.20 if not even higher AND increase based on how many low levels you carry through. No disrespect to you either as you seem to be a knowledgeable player but in general when higher level players see even level 50's or 60's we feel like there is a great chance they could drag the team down. Mercurysteam is constantly evolving spawnrates and adjusting difficulty that most of us arent even breathing that true sigh of relief until max forge level. (That used to be lv150, now apparently its 200 or something.)
  Recently when I team with one or two other players (usually members of my guild) We are still paired with very low level players >20. We are talking a difference in mmr of 30+ points, atleast! All they can do under those circumstances is eat up the lives because the difficulty is punishing, often they quit, even if collectively we are winning the level despite their struggles. When lv375 antags show up and we have 2 level 10's, how is that fair? Particularly to the lv10's? I dont have all the answers for how to fix everything but I like your ideas and encourage you to keep bringing things up to help Mercurysteam improve the game.

I wonder if its possible that each person has the choice to watch them or not. If I choose to skip the cutscene could I spawn into the game and get started regardless if Johnny Lv.5 decides to watch the cutscene or not. Perhaps Huey, Dewie or Louie could spawn in their place until they are done watching it. If the antagonist wants to watch it, let them, it really only hurts their time to make our lives hell. I believe this is a good idea that could satisfy everyone as well.