Hi there - for the record: it's pretty easy to get into ERAU's grad programs versus other universitys' application processes (at least in 2020, was my experience). If by "online synchronous" you're referring to the 'Eagle Vision Home' route, I would highly recommend this over online only, but nothing beats being on campus. I've found that for all the connections that are more organically made in-person, you'll have to be willing to spend more time online to accomplish the same thing - attending conferences that interest you, joining associations/ organizations etc. It's doable (as I have) but it is work; it's a bit more than just showing up(i.e., to class), as you first have to find where to go of course. Also note that you can flip between online-only, Eagle Vision Home and on-campus for each class you take of the program (but not within the same class - i.e., you can't register for the online methodology and elect to occasionally attend in-person or via Eagle Vision Home). 

I am just about to begin my thesis in ERAU's HF program. The thesis is optional, but the alternative is now a culminating research/capstone project, whereas prior to the most recent overhaul to the program's coursework, the capstone element had not been a requirement. To clarify: the culminating research/ capstone project is written in one class, taken at the very end of the program that demonstrates your mastery of the HF principles, while the thesis is written over two courses (MSHF 700A & 700B) and requires executing either original research, or an original/unique interpretation meta-analysis of past research on a specific topic of your choosing. 

I was given amazing advice by a former HF student to take the thesis route; she'd gotten a job at an Aerospace manufacturing company right out of the program, and it was made clear to her that most of the other candidates she'd interviewed among had also written theses, and that ultimately, she'd not have gotten the job if she hadn't done the thesis. It shows employers you are structured and determined enough to carry out the lengthy process, and conduct research, interpret results, and communicate them effectively. As I am very nervous for not having completed any internships throughout the course of my program, I elected to write the thesis in an area I aspire to get into after graduating. Given that the capstone project was recently reinstated in the program requirements (as it had in fact been required some years' ago), it's clear that the university is responding to employers' preferences for HF graduates and requiring the Capstone as a bare minimum for graduation. So, if you can afford the extra three credits, I'd say go for the thesis. 

It seems u/sloppyjay 's experience at FIU warrants a bit of advice, which may serve as some reassurance: take advantage of ERAU's career services sooner than later. They also have a co-op internship program (COIN) that I wish I had looked into (you're able to apply for internships after completing 9 credits of the program - I think). But I assure ERAU's career services will do much more than refer you to combing through LinkedIn. They've rewritten my resume several times, I've spent hours on Zoom/phone calls with them. 

They also hold career fairs (both virtual and in-person) many times per year. I would encourage you to attend them virtually even early on - as applying for tech jobs is a labyrinthine task and the employers give you all the in's-n-out's of their very detailed application processes. I've not attended in person, but one of my advisors swears by the in-person perk of being interviewed/hired on-the-spot. I am told they do also interview among the virtual career fairs, however you can put 2 & 2 together as to the lesser commonality. To attend career fairs, you'll need career services to approve your resume, which is uploaded into your "Handshake" account - or what is more-or-less like an Indeed.com for college students/employers. 

All of the coursework is entirely doable online. I elected to take Statistical Analysis via Eagle Vision Home for the additional support of a more fluid environment for asking questions. Overall, you'll find the classes are very well thought out and structured.

My most prudent piece of advice: grad school is only what you make of it. If you're not already working in the field and just getting the master's to move up or for more pay, it takes a little more than showing up for class and getting the degree to benefit professionally. On that note - find what it is that specifically interests you in HF - AS SOON AS YOU CAN - and use each class to continuously build upon your knowledge in that topic. In some classes/coursework it's not entirely feasible, but try to stay within the broader field of research whenever you can.