Make skillchains increase drop rates. Problem solved, people use them now.

Enjoy your Blade: Rin > Wasp Sting > Distortion skillchains for maximum skillchains on a target.

Honestly though for me... it comes down to this.

Know your skillchain properties. Don't make plans to set them up, but if something comes along that could be useful, utilize it. That's more complicated than setting up skillchains, or just spamming TP.

Example:
BST and PUP.
BST uses ruinator and I am closing in on 100 TP. I know that ruinator is distortion.
I am using Victory Smite mainly, which is fragmentation. I also have Stringing Pummel, which is gravitation. Victory Smite and Stringing Pummel are pretty comparable.

If I use Victory Smite, no skill chain happens and I just go on punching things (while Koumei keeps curing me, or casting silence over and over and over and over if the mob has MP [Hi Qilin!]). If I use Stringing Pummel, I make darkness and potentially do a chunk more damage.

TP spam rather than skillchain planning has been shown mathematically to be more effective, and skillchains are usually accidental and a nice bonus. However, if you know your skillchain properties when random opportunities arise, you can take it slightly further. It's all within reason, though. If you are on PUP and have Shijin Spiral (fusion) and no Pummel/smite, if someone uses a fusion weaponskill, DO NOT use dragon kick to make light because combined the damage will probably be less even if light isn't resisted.

In an alliance setting this usually doesn't matter because by the time you use a weaponskill you can skillchain with, someone else probably already weaponskilled. With less people though, this becomes more viable.

tl;dr: skillchain < tp burn @ 100 < tp burn @ 100 with random bonus skillchain damage < tp burn @ 100 with knowledge of skillchain properties to use at an advantage rather than random luck