I've only played the game for a couple weeks so I completely understand where you're coming from. While I agree that the lack of in-depth tutorials (which the devs are working on, I believe) really hurts newcomers to this game, I don't think it inherently has "too many complex mechanics." There's a market, albiet niche, for incredibly deep and complex games like this because it rewards complete mastery of the mechanics.
Take Team Fortress 2 rocket jumping for example. Pretty much anyone can do the basics of rocket jumping, point at the ground and shoot, but people go absolutely fuckin NUTS on that. People can clear the entirety of a map in a single string of jumps. It rewards people who take the time and effort to master the mechanic.
MB2, I think, is the same. The gunner classes aren't all that complex. They've got a lot of cool mechanics, but overall, it's pretty similar to other shooters of this genre, just with a lot more bullet leading. The saber classes, however, are the "rocket jumping" of MB2. Anyone can pick up a saber and start swinging, and you'll probably get a few kills on some gunners, but it takes a lot of time and effort to become good enough to battle others. If you don't want to take that time, that's understandable! But just because you don't want to doesn't mean other people shouldn't have the option.
The reason MB2 has a rather complex saber system is because once you get good at it, it becomes REALLY interesting to watch, and fight. As the name suggests, a lot of saber fights in this game look like they could come right out of a star wars movie.
As for your issues with blocking numbers, you really don't need to know how much stuff drains. Let me break it down for you
Blasters don't drain too many force points. You can just watch the bar go down, and if you're getting low, back off. Charged shots from pistols do more force damage, as well as heavy blasters from commanders.
Block points are drained for every hit a saber has against you. If you are mid-swing, you will lose more points. The goal in a fight is to keep the momentum up so that your swings are coming out before your opponent's, allowing you to batter down their defenses. If your points get too low, back off and circle them. Keep in mind, they're gonna want to regen BP as well, and you can use that to your advantage to take some time to recharge.
As for PBing, it's really quite simple. As a beginner, I suggest aiming high, because most attacks are either going to be people running straight at you with an overhead attack (from newbies) or attacks from the left and right (as the left/right spam attack is the fastest combo for basically all styles)
If you play with the saberstaff, you can even manual block without aiming, just by pressing your directional keys in the corresponding direction. I believe that trait might be getting removed in the next patch since they want to simplify the different saber styles, so maybe don't get too attached to it, but it's still there.
For now, all I can really suggest to you is to either spend some time on duel servers picking up the skills, or stick with gunner classes. Trust me, you aren't missing much. Personally, I find gunners to be a lot more fun anyways.
Do you want to kill this game, go play Battlefront. If it's too hard for you nobody cares find a different game. This game has any play3rbase at all bcause of complexity you are basically encouraging to kill it.
Implying the playerbase isn't at 200 and bleeding out lmao
Kind of a nostalgia trip post that... My point is: younger players might not appreciate the complexity of JKA/MB2 due to their later gaming background compared to when the original game was released. The original sabering of Jedi Outcast/JKA is one of the main things, if not the main thing attracting new players because there's no sabering system like this in any other SW game. So, younger players may not have the courage to learn complex sabering of MB2 because they don't love old games enough.
This isn't a great argument, dude. Younger people aren't inherently against complex systems. The general casual gaming public doesn't like super complex stuff. OP said themself they have a full-time job, so they can't be that young. I was playing games with this level of complexity when I was 15.