Do I really have to do a point by point? ugh.
I see what the problem is, you fell asleep in the first 20 minutes and missed the rest of the movie. No wonder you didn't enjoy it.
In the first fight, only plasma was used, and the monster just fought with it's claws or head.
In the next fight, the monsters use an acid spit to destroy Cherno Alpha's passenger shielding. Another monster uses an EMP to disable Eureka Striker.
Gipsy danger uses a freaking battleship as a club, and then coolant as a weapon to freeze and destroy monster's prenhsible tail and/or tentacle. The monster later reveals itslef to have massive wings, which it uses to turn gravity into a weapon against gipsy. Eventually gipsy danger reveals a sword and destroys the monster.
Lets list the weapons.
1 monster claws, punches, plasma (basic stuff you said was the ONLY things used)
2 acid spit
3 EMP burst
4 A battleship
5 coolant
6 monster tentacle/tail
7 wings
8 giant robot sword
How the hell do you get "Every fight used the same weapons"?! That is completely false, you are either blind or you didn't even actually go see the movie.
And I didn't even get into the last scene.
You see, the problem is that you see all these weapons as somehow "different". 3/4 of the weapons on this list are just variations of "hit them harder"
Just because they LOOK different doesn't mean its any more interesting to watch them used, save for the freighter ship, which I immediately thought was stupid looking because it was the size of a goddamn truck. Why does the sword come out at the EXACT LAST MOMENT. Not beforehand? Why does none of the other jaegers have the apparently such an amazing sword that it one hit KO's the kaju that the power based jaegers couldn't kill?
Certain other weapons like the EMP were stupid because it was such a plot device that never comes up again. The EMP burns out the "digital" jaegers. Okay. So, why do they suddenly stop attacking the disabled jaeger and only attack when provoked? What, do they suddenly know that the jaegers are permanently disabled and not temporarily? Such a massive plot hole. And why is it not used again. Why don't they use the EMP to shut down the jaegers during the trench fight? Why do nukes work? The kaju know that humanity has nukes and we can use them, why don't they develop a counter measure for those?
Okay, so you can summarize his personality. What character anywhere has a personality that can't be summarized in a paragraph? None. You are making a nonsense argument.
The characters were unique because they were made specifically for the movie. They have never existed before. Unlike Superman, unlike Ironman, unlike the whole damn cast of Star Trek. For once, there is a big budget movie out there to see that isn't just a retelling of an old story.
Okay lets lay out a general movie character description.
The main character is a blond young male that, earlier in life, has lost a family member that pilots a war machine. Losing that family member messes him up someway or another. After living on the edge of society for a while, he is found by a military officer/mentor figure who wants him to come join his cause, and needs to convince the somewhat unwilling main character with some inspirational talk.
The main character is cocky and headstrong and skilled in fighting, but his cockiness gets to him several times for the worse. He receives a war machine just like his previous family member to pilot.
He attempts to court a co-pilot that disapproves of his cocky attitude. The co- pilot is skilled in fighting and extremely intelligent. The Co-pilot also has trauma that is related to losing loved ones in the past and comes back to haunt him during an important time at least once in the movie.
However, circumstances appear that force the duo to work together, and they realize that they work well together and team up for the final confrontation.
Okay so, now. Am I laying out the character descriptions of Star Trek or Pacific Rim?
What personality do the characters have that's not related to the words "cocky, arrogant, past trauma" I could easily make the above more detailed and still have it apply to both movies.