So far I am really liking the Helix but I've encountered a couple small things that I guess I would consider to be quirks, things that maybe no one noticed.
1) Let's say I set up a footswitch to control the amp gain and the master output volume, which is a fairly typical way for me to set up a solo boost. There is no way for me to rename that footswitch UNLESS I assign a block's bypass function to that switch. So, to rename it, I would have to go to another block, hit menu, hit footswitch assign, assign it to that footswitch, hit customize, then go back through all those steps to remove that block from the footswitch assignment so that I can have a named switch that only controls the things I actually wanted it to control. The point here, really, is that there HAS to be an easier way to name a switch. Ideally, it would be under the options when I touch and hold the switch. Way easier.
2) On one of my presets, I have it set so that it switches on a phaser, ups the amp gain, and toggles between two different reverbs. So when it is on, one reverb is on the other is off, when it is off, they switch. The problem is that if the reverb that will be off for that part of the song is the last thing I assigned to that footswitch, then the switch appears off even though everything else is on. So I have to go and reassign, say, the phaser to that footswitch so that it is "on" when most everything is on. It would be nice if there was an easier way to toggle which position is declared as on and which is off.
3) I don't think the A/B splits are working properly. I have the exact same amp and cab set up on two different presets but the output volume is not the same. All the settings are exactly the same, one is just quieter than the other and the only difference is that one preset has just the amp, cab, and a reverb and the other has an A/B split so I can toggle between sets of effects. But even with everything bypassed, and no matter which side of the A/B split I am on, the split one is quieter than the non-split one.
Otherwise, sounding great! Takes a little getting used to, but so does any new piece of gear.