Errr… sure i can change my spawnpoints by clicking on flags in the limbo screen… or did some ETPro bugbag disable that and I just don’t know cuz i ve been mapping only for 4 weeks?
You are right that you can’t have default spawns once you click on a flag and thus leave the path of the autospawner… but as soon as ppl can click there once they should be able to click a second time too. If they don’t know when to do that or what for, something like default spawns won’t help them anyway cuz they need to learn the map badly 
Disabling the initial spawn on Radar is a good idea though (McNite stomps with his foot :bump: )… road spawn features 3 exits, and I doubt that any team that lets itself get spawnkilled completely in a spawn with 3 exits would ever get the idea of using the initial spawn. Btw same with Goldrush… you never see the whiners (oh plz dont spawnkill us) use first allied spawn cuz who knows about it simply uses it.
Its just important that mappers create enough exits from a spawn to prevent massive spawn overkill when there is no second spawn. Look at supplydepot: lots of spawnkill by Panzerfaust at axis spawn cuz a lot of ppl forget about the 2nd exit.
1st conclusion: you won’t make bad players play better by forcing their spawns… its just that the good players would have no choice and get spawnkilled together with the noobs 
2nd conclusion: if you are tired of being the good player getting killed together with all the noobs or of having most deaths cuz you arrived at the objectives all alone, change the server and play on pro-servers (that s what I ve been doing for months, I would ve stopped playing ET at all if I hadn’t found out about servers where players know what to do)