If I was to go true-bypass...

Yes, you're definitely on the right track.

The BluesDevil is true-bypass and no loud pop when engaged like some switches do. It's got that mid-hump and less bass, which I'm kinda sick of, but I've kept the pedal because it's still the best TS/808 clone I've heard.

The Strobostomp does change your tone a tiny bit even in true-bypass mode, but it's the best tuner I've used. So much more accurate than anything else out there.

Haven't heard the Landgraff, but I'm not a fan of the Klon. When the gain's cranked, it displays all that bass robbing mid-boosting coloration that you can get out of any of the many TS variants. It works best set low pushing a cranked amp, and for this reason, I'd recommend the BJF SeaBlue EQ for a truly transparent boost with very useful tone controls.

My DL-4 died, but I was already fed up with it's many issues. A problematic power supply amongst them and the thing's a tone-sucker even when bypassed. Those 'models' may be interesting, but they sure don't sound like the real thing to me. I only used it as a looper and there's a lot of new ones out there that do that job much better (Boss RC-20XL, DigiTech JamMan, etc). When I got the estimate of $300 CDN to repair it I swore off Line6 product forever. Sell it quick before it breaks.

I'm waiting for an Echoczar, but I'm not holding my breath. For a few hundred less, you can pick up a Diamond Memory Lane today. True-bypass w/550 ms of great sounding analog delay. You can loop other effects in the ML or use that same jack to control feedback with an expression pedal. It's also got tap tempo, modulation and a tone control that can add bass or treble to each successive repeat for effects that run the gamut from subtle and musical to totally insane. It does simple slap-back and speaker-blowing self-oscillation equally well. Some users find it noisy, but that's unavoidable with the bucket-brigade chips used and apparently the Echoczar's noise floor is at least as high.

That's quite an investment, all told, but if you've got great guitars & amps, you'll want to do everything possible to preserve your sound.

 

For the effect that is on all the time, leave it as it is. What's the point of having true bypass if you're never going to bypass it?

Keep the tuner in a looper, so you can silent tune.

As for the others, they can be modded to true bypass.

 

One - Get a Menatone Red Snapper to replace the 808..

Two - The Landgraff DO will never replace the Klon, I had both and got rid of the Landgraff, and still have my Klon.. People can talk **** all they want on the Klon when the gain is turned up, but there is no better clean boost than the Klon, and it has one of the best buffers for those other peoples that suck tone.. The Klon is my number one pedal on my board, and I keep the gain turned below 9:00...

The Delay - I don't use one so I am of no help hear.

 

If you like the TS808, the Maxon OD9 is true bypass!

 

So is the MI Blues Pro, and it's like $89.

 

I'd replace the TS-808 with a HomeBrew Power Screamer.