I have a few hundred hours of time spent in SE1.
Welding in SE2 is currently a miserable experience. Firstly, It's in Alpha and I get it, so please, save the comments about how it'll be fixed at a later date. This is just for me to bitch about a game I have been enjoying.
Range:
The welder's range is so bad that you are forced to crouch most of the time if welding under you because if you are close enough to trigger the weld on an unwelded box the game thinks you are obstructing the object (ugh!!) and if you back up slightly, well, now you are no longer in range of the welder!
Block Connection:
"This block does not have any connections." Please die and burn in hell, it's RIGHT NEXT TO A FULLY WELDED BLOCK what the actual... The trigger for this is messed up. Additionally, I can frequently place blocks to be welded which show up, but can't actually be welded due to the no connections messages. An example of this is two small thrusters 90 degrees to each other with a sloped block between them. The block can be placed but not welded. There are tons of examples of this, and don't get me started on how beyond aggravating it is that the place blueprint function doesn't let me place it on the little block stand I made to weld it up. That basically never works, but what about the auto build-stand feature? Seems great! Oh, wait, frequently it won't let you weld after you weld up the build stand because... "no block connection." F**k you.
Block Blocking:
It's seemingly impossible to weld anything remotely complicated from a blueprint because you can't ever weld all the blocks and it's impossible to know if you've got them all until you move it and... yep, there's 5% of the blocks still in the projection. Oh, they are buried in the middle of the thing? perfect.
"But the area welder fixes most of this!" Yeah, it does, but you can't easily get it from the start of the game. Give the welder a slightly better range and a small area weld to get the 'hidden' blocks. it's miserable to be modifying a build but have to alternate between placing and welding back to back because you can't weld the connecter behind the thruster.
Lastly, being able to weld from ram materials... I like that. It makes the PC much more powerful when you can carry 500 of the base three and be able to get yourself out of bad situations when flying far from home for minimum weight. I do wish there was a toggle in the menu for it, or that the toggle in game would force you to only use raw or items depending on your selection unless you change it. Right now my world happens to have a lot of scrap I've grinded down. Yes, I realize I could just not carry any ores.
The game is out as playable Alpha and people are playing it. What's my point? My point is that one of the main things you do in this game is WELD. Just make all the welders partially area welders for now and nerf it later - the most annoying thing in the game should be having to get more resources, not that I can't build something because I can't weld the damn blocks. I have built things twice trying to get it right in survival only to switch to creative, drop the build (after I built at it in survival multiple times) then go back to survival and place the attempted build in the "graveyard of shattered dreams" yeah, I made a graveyard with *mostly* complete builds instead of dropping it into my game in creative and keeping the resources.