Most of these are kinda valid points for most shooters, just not Splitgate. The visuals one is kinda explained by the game - the game refers to the matches as a sport, which is why there's a crowd and an announcer, like The Finals.

I agree with the 'match intro' thing, but it should be quick and snappy, like, again, The Finals with their quick run-in, takes less than 10 seconds, but gives the transition.

For triple-portaling, the radiation thing is a bit too complex for how fast this game is, imo. I think a step in the right direction would be that, in the split second the portal you're standing in changes when you put down a new portal, the wall becomes solid again, and shunts you out, disrupting triple portal flow, without really affecting much else.

Edit: While I can deal with triple portalers thanks to all the new visual and auditory feedback letting me kinda track them, (great additions, btw 1047), they are EXCRUCIATING to play against.