I hope you don't get too caught up on talking about some of the minutiae of the exact nature of church uniforms, etc. and focus on the big picture. Like think of Liturgical Worship as a paradigm.
On some of the minutiae type issues I can point to the precedents in Judaism, and even point to churchs and synagogues that predate Constantine by 100+ years that show a lot of liturgical development in early Christianity and Judaism in their architecture, art etc.
Dura-Europos church - Wikipedia
Dura-Europos synagogue - Wikipedia
But anyway, I would rather you be open minded and be prepared to see the Faith a bit differently (in terms of history etc. ). Back in 1996 reading "The Purpose Driven Church" (an influential book that spawned not just lots of church growth books and movements, but the entire "Purpose Driven" self help movement", I generally assumed a minimalistic out look to Christian worship. It was about preaching Christ, and praising Jesus etc. But the forms, style etc. of music weren't really important. And in fact reading "The Purpose Driven Church" that is an essential theme and message, that is not just assumed but also preached and promoted. Much like radio stations have demographic audiences, the pastor Rick Warren urged church leaders to make church's targeted for a particular demographic in much the way radio stations, and TV stations function. Anyway, the head church has very modern services, even rock services similar to the parody video below.
Now to make things easy (since I'm tired didn't get any sleep), I'm just going to spell out some problems with this approach.
1) It encourages a consumeristic attitude toward the Church that is negative and at times antithetical to the Gospel. Church isn't about being entertained, and discipleship in the Biblical sense often is quite the opposite of that.
2) Likewise it also can encourage a lack of reverence for God. (I will detail this point out later for anyone interested).
3) But the main point however this sort of attitude is not really historical, factual, and I will submit Biblical.
There actually is only one form of worship that God ordained and that really is Liturgical worship! Now this goes back to the original tabernacle and temple, but as saint Paul mentions in Hebrews those were copies of the kind of worship we see in heaven. And that way of worship likewise was how the Jews patterned the worship of the synagogue, which likewise influenced directly the worship of the Early Church.
But back to paradigms...
There is a certain way of seeing Christianity, something I assumed for years myself. It's a Utilitarian and Minimalist view of the Church, I have nick named this viewpoint "Independent Contractors for Christ". The view point is the Church is just about doing a few things ministry wise, like the list of activities mentioned in "the Great Commission" etc. and more or less we have freedom to do those things as we see fit (it's part of our freedom in Christ etc.).
But this view is very different than a High Church view. The Church is not just about "What we do", but also "who we are", and even more importantly "Who God is". One of the greatest biblical themes that gets little attention in many worship services is the notion that
God is a King, who is worthy of awe and reverence etc.
Besides this there are many important aspects of the theme of holiness, and dealing with the sacred. To many times these things are pooh poohed as superstition etc. especially ritualism, but going back to the earliest days of Judaism there is an important link to those things, and the spiritual and the supernatural. If you treated those things with disrespect that was an indirect insult to God who ordained them, (or in Christian terms is at least worshipped, honored by such a things). And if people want to argue I can point to a few New Testament examples of Anias and Saphira, and saint Paul mentioning people sometimes getting sick or dieing from Communion.