I happen to enjoy both 6's and HL. If someone wants to organize a night of payload with 2 rounds (one with wrangler, one without), I wonder what the time difference would be? For certain teams, the wrangler doesn't slow them down, others its a great factor.
UGC is here for the populace to play and have fun. Some take it extremely serious. I had a guy asking me what he should do about 6's and I told him to start out with UGC, since its free, get a team together that played a lot. And once he was able to get top 3 in UGC Plat 6's, then they should consider bumping up to ESEA-Open. This is a known fact that the players in UGC 6's are new to the game. I dont think that is something they should feel ashamed for. Its a natural progression to me. pub->lobby->pug->UGC 6's low->UGC 6's high->paid. Otherwise its just a waste of money.
When you start bringing Highlander into it, you are talking about a different mode of play. Its like watching invite players that are just now getting into MVM. They are enjoying themselves, having a shit ton of fun, but they really dont get it....until they play more. Such is the same with Highlander. A lot of invites are joining in HL and are enjoying it. Lets not belittle what we have. Very few are, but some are pointing fingers as if its a disgrace. Just let people have their fun. Highlander can be extremely competitive, if you dont play it then you probably dont understand. My team, the syndicate, is pretty solid and we generally practice maybe twice a week. This week its much higher because of the SNSD show match (#1 Eu HL team). So yea there is a lot of stress and pressure on it to show up and do well. If your HL team prepares and has a strong caller, it can be like a well oiled machine. It'll never be the same as 6's, but if you watch the top teams on 5cp, you can see that a lot of the same concepts are used.
Just enjoy it for what it is.