Marxist@ #15 doller:
Yeah... I mean it's always for the best to try to use your weapons and have the heals from my understanding you should be getting oodles of heals, so really only go to melee if you absolutely have to.
2. It really depends on the map. If you can't get close or shouldn't try to get close you should charge stickies - it's also good for peeking and shooting a deep sticky. HL works a bit differently from sixes so I can't really advise you on the specifics, and I'm sure lots of demos get away with just arcing their stickies since you don't tend to have a ton of long range engagements.
Thanks! My team kinda ran with a heavy-engie-medic-pyro combo, and demo-scout-soldier on flank, kinda weird, so I wouldn't get many heals unless I fell into the combo. I have the most trouble playing demo on the more open maps where I can't reach far enough with uncharged sticks (Gpit, foundry), so I suppose charging would be a good idea if I was too far.