Consider this the request post.
Right now, there are two items that I see as being needed for Terraria v1.3.5.x.
1) The ability to revert to the XNA Reach profile. People who have older (e.g. crap) machines/GPUs don't appear to be able to run the game anymore. When I look at the resolution code in Terraria, they appear to still have the old non-4K limits in place if the Reach profile is embedded in the executable. I already have the code to handle this.
2) "Uncap" the minimum zoom level. This is going to take a little while to figure out where they're putting the cap in place and then figure out how to circumvent the cap. (Update 4/21, 8:00pm: I just started up 22.214.171.124 and...yeah, rather than scale to pixel, they're scaling to their "maximum" 1920x1200 view. This might take a while to figure out.)
Anything I'm missing?
Update 4/30/2017, 3:00pm: I'm working on two patchers. The first patcher will handle number one on the list above only. The second patcher will be resolution patching only. Expect releases for both sometime this week if all goes well.
Update 5/6/2017, 3:00pm: Test release of RTReach 0.1 available. This switches the XNA profile from HiDef to Reach so that people with older video cards who were locked out of v1.3.5.x should be able to run the game again. Still working on the resolution unlock patch. Had to roll back from Mono.Cecil v0.9.6.x to v0.9.5 due to some assembly resolution stuff that Terraria does.
Update 5/7/2017, 10:35am: RTResolution is mostly there. I removed the max-4K resolution limitation and have it so that you can set the zoom to 1:1 pixel, but something else in the core game is still overriding the 1:1 pixel code. Sorry for the delay, still working on it.
Update 5/17/2017, 6:00pm: I've been sidetracked while covering for a coworker who was out on vacation and am almost done getting caught back up. Still working on it.
Update 6/11/2017, 5:10pm: With 126.96.36.199 out and me back at my home PC, I've resumed work on RTResolution.
Update 6/11/2017, 6:00pm: RTResolution v0.1. Let me know if it works for you.