Re: travel costs for the 1-16 format (I agree the league would whine about that), I took a peek at what this year's playoffs would have looked like, and it's no worse than what we got:
ROUND 1
London vs. Barrie
Saginaw vs. Flint
SSM vs. Owen Sound
Oshawa vs. Kingston
North Bay vs. Guelph
Kitchener vs. Erie
Brantford vs. Ottawa
Mississauga vs. Sudbury
Just two crossover series: London vs. Barrie and North Bay vs. Guelph. The first one is easily manageable. The second is longer but actually shorter than what both teams had in reality (North Bay vs. Kingston and Guelph vs. Sault Ste. Marie). Anyway, Guelph has the easiest travel in the OHL, no one's shedding a tear for them. The longest haul on the list is Sault Ste. Marie to Owen Sound, but it's a west-west matchup that could happen under the current format.
In terms of competition/interest, three of these series actually happened (Kitchener vs. Erie, Brantford vs. Ottawa, and Mississauga vs. Sudbury), and all three were fun in my books. I enjoyed the Erie series (even if it felt like one of those series that would have no bearing on who would win the league), and Ottawa and Sudbury managed a rare couple upsets. We pick up a couple rivalry series in this 1-16 configuration as well (Saginaw vs. Flint, Oshawa vs. Kingston). I think North Bay vs. Guelph could have been interesting, too. Guelph was pretty frisky against a strong Soo team.
The only thing we'd really lose out on here is Oshawa hilariously struggling against a bad Barrie team, but hey, maybe they would have struggled against a bad Kingston team too! And anyway, there's always the second round. Speaking of which...
ROUND 2
Assuming this alternate reality Round 1 played out basically the same as the actual playoffs, Round 2 would give us:
London vs. Ottawa
Saginaw vs. Sudbury
SSM vs. Kitchener
Oshawa vs. North Bay
Rough travel across the board here, even with two inter-conference matchups. But look, London-Ottawa isn't much worse than Brantford-Ottawa, which is a thing that happens a lot (and did in fact happen in the real Round 1). Saginaw-Sudbury, yeah, that sucks. But it's a Saginaw-Sudbury playoff matchup, come on. This might not happen in 200 years in real life. The Spirit can haul their way across the Trans Canada a couple times for novelty's sake.
From an entertainment standpoint, London would definitely body Oshawa, but let's be fair, Kitchener didn't exactly do much against London in reality either. In this scenario we get a crack against the Soo, and to be honest, we probably wouldn't have a ton of luck their either, but it would be the first Rangers-Greyhounds series since that epic 2018 conference final and hey, maybe the Rangers could take a game or two and make it interesting. Oshawa gets to embarrass itself against North Bay in Round 2 rather than Round 3 this time. Sorry, Gens, no Ottawa freebie in this scenario.
ROUND 3
London vs. Oshawa
Saginaw vs. SSM
Two series that actually happened, so we can ignore the travel part. It was clear when the playoffs began that there were only two series this year that would matter (Saginaw vs. SSM and Saginaw/SSM vs. London) and in this scenario, the former (also the best series of the playoffs) gets the semifinal billing it deserves. Meanwhile London gets to carve up Oshawa a couple weeks early, and we get internecine fighting on the Knights topic on HFBoards as low-info posters talk about the Knights going undefeated in the playoffs and the vets scream about jinxes and what a bad matchup the Soo is for London. Good times.
ROUND 4
London vs. Saginaw
Maybe in this hypothetical SSM beats Saginaw (and maybe also London??) but we'll stick with reality. This was the real OHL final and it deserved top billing. And hey, maybe it would have even made the Mem Cup a little more competitive as the Knights and Spirit would have had less rest going into the tournament. Remember the epic 2007 Cup that saw Vancouver and Medicine Hat battle it out in an epic seven-game slugfest in the WHL final, only to meet again in the Memorial Cup final? Probably not, but it was cool, and hey maybe we would have gotten something similar here too.
That was a lot of words not about the Rangers but you get my point. This format is more interesting from a competitive standpoint, the travel isn't that bad, it makes the regular season matter more (the Rangers wouldn't have locked up their playoff seeding with two weeks left to go in the regular season in this formulation), etc. I don't hate the reseed-after-two-rounds idea either but it wouldn't prevent silliness like London and Guelph meeting in Round 2 in 2014 or London and Erie meeting in Round 2 in 2017. (2017 is another great example of a season where the East was way behind the west and the playoffs suffered accordingly.)
Anyway, sorry to any Oshawa fans who are reading this, but you'll be great next year, and come on, you had it coming.