funny you should mention react on vite - i migrated a web-app to that setup ~3 years ago and never even considered looking back. react is still a trusty workhorse that assists me in getting things done, the ecosystem is rich (i'll take the varying quality as a given for one this size). I've been toying around with next a couple years ago, followed their development for some time, then decided they are not doing what I need. Isometric rendering turns out to sound way better than it actually is. The pain doesn't come from different programming languages on front- and backend, it comes from the difficulty of reconciling client state, server state, security etc. I actually find it helpful to have specialized languages for each side, rather than having to figure out for each piece of code wether its supposed to run on my server or in the browser.