To a certain extent there are boundaries that you don't want to cross by giving every main character force powers. To say the Force has some connection or guide the events in the Solo or Poe characters is fine. To allow them to develop those powers and turn them into Force wielders after some training is another.
There need to be 'ordinaries' in the story who fit because they are more like Batman rather than discover they have the ability to develop into Superman. This is a more powerful part of the overall universe that is so attractive to the audience. I can't be Luke Skywalker, but I can see myself being an ally of his on some mission and/or ascribing to be the ideal he represents.
This is one of the things at the core of what divided the fans over the version of Luke presented in TLJ. Luke is the ideal we are all supposed to want to emulate, and has powers that definitely separate him from us. We saw him become an almost Christ-like figure in ROTJ - the primary 'good' who delivered victory over 'evil' and, by the way, redeemed his father in the process. TLJ presented him as something that fell far short of this archetype and hence pissed off a lot of people - including (apparently) Mark Hamill.
When I say characters like Mara Jade should drop the force wielding aspect of their character, I don't say it because I want a small pool of force users. To the contrary, I would love seeing a huge lightsaber battlefield full of combatants doing all sorts of amazing Force things. This might be the wrong direction for the Mara character in new cannon, as the fans who know her know she became a powerful Force wielder who eventually marries Luke and mothers their son all while developing use of the Force that rivals Luke. Given what they did to Luke, I don't think you develop Mara to those heights and have it still fit. I do want the Mara character to come back but limit her to being the right hand of the top smuggler group who can play a hunch very well (Force related or not). She could still be a powerful and very compelling character in this regard, in the mold of Han Solo.
They gave Kyle Katarn force powers because fans wanted to play a video game where they got to wield a lightsaber and Force push troopers off of ledges. It was a convenient hook to sell more video games rather than a well thought and explained turn of events. Keeping him more in the vein of the Punnisher (as he was in the original Dark Forces game) is quite enough for the character.
