The only opinion that matters is yours I went through a phase where I liked it without a shield. Then got tired of that look and put the shield back on. Lol.
It's your car and your choice go with what you like.
I have always ran the shield. The turbo just looks weird to me without it on. I bought my chrome shield from Kenne Bell when they were doing Buick products years ago and it still looks brand new.
IMHO, If your just going to let it rust out and look like a turd, My vote would be to cover it up. If you can make it look good, then you've got the option to go "commando".
When my Precision 6265 was new, I painted it with Eastwood Cast Iron high temp paint. It still looks like this, years later.
At least it does under my home made turbo shield.
Here's the one I did for Gary's car.
Your chrome shield looks great! Not running the shield I damaged my hood pad. Now I have the option of going either way. Lol. I like the look of the stock shield with the vents to let the air circulate.