Why is running your own map such a difficult concept?
Unless I'm remembering incorrectly or it was bugged every time I did it, when you run your own base you have infinite respawns, right from where you died. You didn't have to restart at the entrance, you didn't have to actually try, you could even kamikaze into every trap, traps STAY broken this whole run, and respawn was almost instantaneous, so the argument against it of "I'm a bad raider" is at best a joke.
You could be the worst raider in existence and still be able to get through your own base 3 times faster than any speedrunner who died once, unless it's a spam base. You even have the added knowledge of knowing the correct path and where the traps are ahead of time.
It'd be easy to avoid redoing it every time you want to change a single thing too, set a hard limit for when it needs redone (for instance, 450 additional blocks used from last completed run).
Say your base has 1,500 blocks, you use 1,400. Now you run the base, and it marks that you completed it at "1,400 blocks used". Now the only time you'd HAVE to rerun it (you could do it sooner to increase to 1,500 in this instance, if you wanted to increase the time for when you need to rerun later) is after you've added more than 450 blocks to your current usage. So you prestige it to 1,675, you wouldn't need to rerun it. Prestige it a second time to 1,850, if you use the max 1,850 then you have to rerun it when you finish in order to activate it. If you use all 1,850 blocks, you don't have to worry about rerunning it for 3 more prestiges (as even when it increases in extra capacity, it only goes up to 200 extra at 4/5, until prestige 6, you're still fine unless you hit 2,300+), and that's IF you use all the capacity available. If you've added 450 points worth of traps (6 flamers with a couple modded, 7 guards with all armor modded, 10 impaler traps with any mods, 20 corrosive blocks with all mods, etc) that is quite a big change. On the flip side, you could have added 449 base building blocks for new dead end paths, a TON of mods to all existing traps, or a combination of all these things.
This is a point where your base has drastically changed in difficulty, so having to run it still seems incredibly easy with infinite lives, perma-destroyed traps, and on-death spawn (not to mention you have access to all gear as well, so you're not worse off than a raider). The only way this would be difficult at that point is if you've made a map that's so spam happy that even with all your bonuses, it still takes 20 minutes to complete. If it's THAT hard to do with infinite lives and everything else you get, why would ANYONE want to run it when they have none of those bonuses?