Good points, Currently I have a Rugged .45 which handles my .45, 9mm, 220gr 300BO rounds well. I have a Spectre II for my .22 can and a Bowers .50 for my .50Beo that can be used on other calibers depending on the velocity. The 50 can really tames the rifle quite a bit.IMO "multi cal modular" cans do have their place, and newer designs are awesome, but they are not without limitations. The primary one being rimfire. 22 is filthy, so it has to be user serviceable, but most all 22s are blowback and direct thread, so mounting and backpressure aren't a problem. There is also little gas at relatively low pressure/velocity, so a small 1x5" can with baffles designed for a ton of cross jetting works great, and it can be really light with steel baffles, and only a couple oz with aluminum or titanium. Pistol cans need more volume, but still run at relatively low pressures, backpressure is more important, as is a modular mount being you might need direct thread, a booster, or 3 lug depending on application, you also have a 9mm or 45cal bore, so they are less efficient with 22 calibers, and are not always efficient on rifles, being the higher volume/velocity of gas compared to pistols increases backpressure a LOT as baffles are designed for more and more cross jetting.
Rifle cans have to be strong, especially with FA or short barrel ratings, so they are heavy with steel, or expensive with titanium. Welded cans work well in rifles, no real need to take them apart, they are stronger, lighter, and there is less to go wrong than a serviceable can. Rifle cans also need a LOT more volume and backpressure in semi-autos is a huge consideration, pretty much giving rise to flow-through cans, or baffles with relief ports instead of heavy cross jetting clips. There is also the strategy of using a small can with less muzzle suppression being a rifle is already large, cans add a lot of length and forward weight, and won't be really quiet with supersonic ammo anyway.
That Banish 30 is expensive, relatively light at 13oz being titanium, but at 1.6x8" it's really big. Good for bench rifles, or chasing really quiet 300BO, but IMO is too big with too much backpressure to be a great all-around can, especially on ARs. I did demo one, and it was on a bolt-action 300BO, really impressive, but yea, it's huge, and wasn't quite as good as the Nomad L, that can is about the same size, but less expansive/heavier due to steel baffles.
My advise, with the same $1699 budget would be a SiCo 36M and a Rugged Oculus, both are modular in length, both sound really good, they come in at that budget including stamps, and you have a good rimfire K and full size, pistol, rifle, K and full size rifle cans. Only real downsides are that it isn't as quiet as the larger 8" cans like the Nomad L on a bench gun, and it's heavy/fat for handguns. The other way would be a 22 can, a YHM R9 for a small, low backpressure K /9mm can, and a resonator 30 for the best suppression in rifle calibers. In any case, pretty much anything other than a dedicated rimfire can on a rimfire host will be disappointing once you try a 22 can. I would use a rifle rated 9mm can on 22-30cal rifles before I would use a 22 rifle can on a 22 rimfire.
My next can will be a .30 cal for 556/7.62 ARs. The Banish would be ok for those but pricey. I was looking at something to cover bolt guns and ARs.