No 4 is forum search link in CCP’s QoL thread, you should see 13 (but out only 8 are relevant here) posts from that thread asking for enhancments to Stack Split functionality:
- Little things / Small QoL suggestions - #382 by Ageanal_Olerie
- Little things / Small QoL suggestions - #840 by Hyperion_Kado
- Little things / Small QoL suggestions - #1033 by darkestkhan_Eriker
- Little things / Small QoL suggestions - #1259 by Julien_Brellier
- Little things / Small QoL suggestions - #1846 by Phaedriel
- Little things / Small QoL suggestions - #2028 by Tonto_Auri
- Little things / Small QoL suggestions - #2251 by Pink_Kondur
- Little things / Small QoL suggestions - #2999 by Tl-lOR_Gods