This show is obviously made on a shoestring budget, which maybe mostly used on actors' salary, and not on CGI. I agree that it wakes some memories from (then not so cheap) 90's SF series.
But earlier this year there was another cheap SF show, 'The Ark', and I must say I found 'Salvage Marines' more entertaining, though I am surely no friend of any military, para, or legit.
There are a also lot of similar (non-SF) shows focussing on troopers or platoons and their problems, amongst other the questionable legitimacy of their fight.
I did not find the acting as bad as stated here by others, nor the script, in general, as condemnable. For sure, both are not legendary, but at least the acting is solid. Sometimes the direction seems to be a bit helpless, but there is seemingly a strong determination to hold a certain level of consistency.
Or, I was just in the mood to watch something not.highbrow, that tries to deliver a simple story and some basic insight. Yes, mercenaries are still humans...and yes, they die for money...and yes, if "government" is replaced by "corporation" or vice versa, it's all the same, humans fighting against humans for advantages that do not reach the fighters, who risk their lives.
I hope, CvD got a bit of a salary out there (he doesn't seem old enough to retire) and give this little show 5 stars.